News


Inventor of the modern answering machine dies at age 87

16 May 2007 News

Sava Jacobson, known as the inventor of the modern answering machine, passed away on 25 April, 2007 at age 87.

Born in 1920 in Poland, Jacobson emigrated to the United States in April of 1929. He attended City College, New York, and graduated with a degree in electrical engineering in 1942. He served in World War II before beginning his engineering career.

Jacobson is known for his early work on colour television, the design of early Fender electric guitars, and the Vox Beatle amplifier. In 1966 he opened an independent electronics consulting business. In the late 1960s he considered modernising the answering machine. At the time, AT&T held a monopoly on all interior wiring and telephone devices. These early answering devices were audio activated and manually removed the phone from the cradle and placed them onto a tape recorder. After the call was over, the phone was mechanically lifted back to its cradle. These early answering machines cost hundreds of dollars.

Jacobson had the idea to place the answering machine before the phone signal got to the phone, so that it could be activated without the cumbersome mechanics. He also created the idea of using two cassette tapes, one for the outgoing message and the other to record incoming calls. Unfortunately, at the time of its development, the device he created was illegal due to AT&T's monopoly. Jacobson attempted to sell his device to many different companies, and persisted for over two years until Tandy Corporation (Radio Shack) agreed to produce his answering machine.

As Jacobson described it: "I designed the machine to sell for $49 and Tandy said we could sell it for $69 and every teenager in the country will want one." Tandy agreed to join the battle against AT&T's monopoly if needed. However, luck intervened.

While the device was in production, the Supreme Court handed down its ruling breaking up AT&T and allowing Jacobson's answering machine to be the first one on the market. The first modern answering machine was marketed under the name 'DuoPhone' and this device and its successors held over 80% of the market share for the first decade that answering machines were commercially available. Jacobson's final patent expired in 1996.





Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Jemstech to produce PCB assemblies for Kamstrup
Jemstech News
Jemstech is pleased to announce that they have successfully concluded a supplier agreement with Kamstrup A/S in Denmark, a leading supplier of intelligent metering solutions in the global market.

Read more...
Webinar – How to develop intelligence edge IoT devices
News
Join Quectel’s expert-led webinar, with a speaker from Qualcomm Technologies, to learn more about how to plan, test and deploy successful IoT devices drawing on the unique advantages of intelligence at the edge.

Read more...
SAIMC training at AATF 2025
News
The SAIMC will deliver a powerful series of training sessions and technical workshops during AATF 2025, providing engineers, technologists, and technicians with the tools they need to professionally register, stay compliant, and lead industrial innovation.

Read more...
Webinar – Discover the ST BrightSense ecosystem
News
This webinar is for camera systems developers who need effective, ready-to-use solutions to keep pace with edge AI vision technologies and the rise of new applications spanning factory automation, robotics and drones, healthcare, traffic and security, sports and entertainment, and personal electronics.

Read more...
Altron celebrates 60th birthday with a call to rebuild Johannesburg
Altron Arrow News
Altron is celebrating its 60th birthday by honouring Johannesburg’s heritage and encouraging business, government and civil society to come together and respond to our President’s call to rebuild Johannesburg.

Read more...
Electronic News Digest
News
A brief synopsis of current global news relating to the electronic engineering fields with regards to company finances, general company news, and engineering technologies.

Read more...
Jemstech to produce PCB assemblies for Kamstrup
Jemstech News
Jemstech is pleased to announce that they have successfully concluded a supplier agreement with Kamstrup A/S in Denmark, a leading supplier of intelligent metering solutions in the global market.

Read more...
New appointments at Hiconnex
Hiconnex News
Hiconnex, a leading provider of electronic components and solutions, has announced key appointments to support its continued growth and commitments to its clients.

Read more...
FoundriesFactory service more affordable for smaller OEMs
News
Foundries.io has announced a new, tiered pricing scheme which reduces the cost of its highly regarded FoundriesFactory service for OEMs in the development phase of a new edge AI or Linux OS-based product.

Read more...
DMASS 2024 results
News
The semiconductor business faced a severe downturn, with a 31,9% decrease compared to 2023 and a 30,3% drop in Q4 2024 compared to the same period last year.

Read more...