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Bill-Posting Blanking Device.
Patent for bill-posting blanking device for applying strips of paper to bill-boards.
Date:
November 20, 1917
Creator:
Gallia, Paul
System:
The Portal to Texas History
Electric Switch
Patent is for electric switch that minimizes other phone interference and limits each call to a single caller on the line. Two lines can be connected to the switch.
Date:
December 4, 1917
Creator:
Teare, J. W.
System:
The Portal to Texas History