1 Matching Results
Results open in a new window/tab.
Results:
1 - 1 of
1
Time-Signal for Telephones
Patent for standard time-signaling instruments and consists of "an instrument for and a manner of signaling standard time through an entire system or systems of telephones."(lines 10-14) including instructions and illustrations.
Date:
May 29, 1882
Creator:
Oram, John M.
System:
The Portal to Texas History