pdf Patents Assigned To or Used By SELECT-O-PHONE
By Paul F 80 downloads
90 pages. Use bookmarks. SOP. Contributed by Mike Neale.
816948 APR 3 1906 - Controller
816948 APR 3 1906 - Autophone System
1265398 MAY 5 1918 - Automatic Telephone Central Station
1280096 SEP 24 1918 - Automatic Telephone System
1280097 SEP 24 1918 - Automatic Telephone Substation
1470202 OCT 9 1923 - Selector Rack for Automatic Telephone Systems
1538141 MAY 19 1925 - Telephone System
2213933 SEP 3 1940 - Telephone System
2248899 JUL 8 1941 - Telephone System
New User?
Read the articles under "Introduction" in the black menu bar above.
Recent Contributors
Thanks for new documents from Ed Palazzo, Bruce Patterson, Jon Kolger, Paul Ivester, Len Hicken, Paul Fassbender, Fred Haynes, Kurt Rudolph, Wade ("Kellogg KITT"), the Connections Museum, Rick Walsh, Jeff Lamb, Jeremy Walters, Mark Cuccia, Alan David, Harry Joseph, Charlie Terry, Karl Brose, Dennis Hock, Tim Griffin, Remco Enthoven, and Steve Cichorsky.
Please send a file to add your name to this list!
Who's online
We have 587 guests online