Title:
Attachment-plug
United States Patent 1398228


Inventors:
Grigsby, Bertram J.
Application Number:
US21153018A
Publication Date:
11/29/1921
Filing Date:
01/12/1918
Assignee:
Grigsby, Bertram J.
Primary Class:
Other Classes:
439/451, 439/461
International Classes:
H01R13/59
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