Title:
Control-switch for cinematographic targets
United States Patent 1351443


Inventors:
Robertson, William P.
Application Number:
US30253019A
Publication Date:
08/31/1920
Filing Date:
06/07/1919
Assignee:
Lydia, Koch B.
Primary Class:
Other Classes:
174/66, 200/5A
International Classes:
H02B1/044
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