Title:
Silent switch
United States Patent 2985725
US Patent References:
Step-by-step electrical circuit controller
- - 2742537


Inventors:
Vall, Wilbur DU. E.
Publication Date:
05/23/1961
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Assignee:
AMBCO INC
Primary Class:
200/11D
Other Classes:
200/19.360, 200/11DA, 200/404, 200/462
International Classes:
H01H5/02; H01H19/58; H01H5/00; H01H19/00
Foreign References:
GB809090A