Folder PATENTS: Telephones and Components

Lists of patents by topic that have proven useful in telephony research.

This is a group project and is under development. Send lists for your area of research - e.g. sets, dials, receivers, transmitters, prototypes, accessories, etc.

Documents

pdf Patents - Telephone Number Card Holders Popular

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Patents_Telephone_Number_Card_Holders_tci.pdf

Patents - Telephone Number Card Holders

Contributed by Paul Fassbender.

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Recent Contributors

Thanks for new documents from Jim Hurtle, Ed Palazzo, Paul Fassbender, Bruce Patterson, Remco Enthoven, Jon Kolger, Paul Ivester, Len Hicken, Fred Haynes, Kurt Rudolph, Wade ("Kellogg KITT"), the Connections Museum, Rick Walsh, Jeff Lamb, Jeremy Walters, Alan David, Dennis Hock, and Tim Griffin.

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