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Telephonometer
Patent for measuring and recording the length of time when a telephone has been in use. It is simple and inexpensive.
Date:
October 15, 1918
Creator:
Gray, Frank
System:
The Portal to Texas History
Pencil-Lighting Attachment.
Patent for improvement in pencil-lighting attachments. This is meant to combine an electric lamp with a pencil, pen, etc. within a mounted casing so that the surface being written on may be lighted.
Date:
October 1, 1918
Creator:
Bennett, Jerrell
System:
The Portal to Texas History
Dispensing Apparatus
Patent for an improvement in Dispensing Apparatus adapted to dispense the material and at all times excluding moisture and air from the receptacle.
Date:
October 28, 1918
Creator:
Llewellyn, John Thomas
System:
The Portal to Texas History