Published Resources Details Letters Patent

Author
Gardner, J.
Title
Means for signalling or effecting operations by means of sound vibrations
Imprint
United States Patent Office, 3342
Description

Specification forming part of Letters Patent No. 913,372. Application filed May 4 1907.

Accession No.1436

Abstract

"These improvements relate to appliances for giving a signal or effecting control of multiple apparatus at a receiving station as a consequence of the arrival at such receiving station of sound vibrations or waves conducted through water from the transmitting or controlling station…"