This inventor holds 5 USPTO granted patents. Top assignees: T.a.d. Avanti, Inc., Other. Active years: 1976-1977.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Paramount, CA (US) (1976)
- Cerritos, CA (US) (1976 - 1977)
Company Filing History:
4 out of 24 
1 out of 834,513 Years Active: 1976-1977
Title: The Innovative Contributions of James R. Darwood
Introduction
James R. Darwood is a notable inventor based in Cerritos, CA (US). He has made significant contributions to the field of telecommunications, particularly in the development of telephone answering systems. With a total of 5 patents to his name, Darwood's work has paved the way for advancements in remote control technology.
Latest Patents
One of Darwood's latest patents is a remote control for operating a telephone answering system from a distance. This solid-state telephone answering system includes replaceable magnetic tape cassettes. One cassette contains a recorded announcement to be sent to the calling party when the system first answers the telephone, while the second cassette records messages from the calling party. Users can achieve remote control by transmitting a tone of a predetermined frequency over the telephone line for a short time interval. In response to this tone, the system allows the caller to record a new announcement on a loop magnetic tape in the announcement cassette.
Another significant patent by Darwood is a telephone answering system with a responsive circuit for remote operation. This magnetic tape type of answering system can be controlled from a remote point. By transmitting a tone of a predetermined frequency over the telephone line, users can automatically rewind the message tape to its original position. The system then plays back all accumulated messages recorded on the tape and transmits them to the calling party. The message tape stops after the last message is transmitted, allowing the system to revert to its normal operational mode.
Career Highlights
Throughout his career, James R. Darwood has worked with various companies, including T.A.D. Avanti, Inc. His experience in the telecommunications industry has greatly influenced his innovative designs and patents.
Collaborations
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Conclusion
James R. Darwood's contributions to the field of telecommunications through his innovative patents have significantly impacted the way telephone answering systems operate. His work continues to inspire advancements in remote control technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile