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Keyless lock
United States Patent 1555969
Inventors:
Gilchrist, Hatch Alexander
Publication Date:
10/06/1925
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Download PDF 1555969
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Assignee:
W H KEYLESS LOCK COMPANY LTD
Primary Class:
70/312
Other Classes:
200/43.120
International Classes:
E05B37/02
;
E05B37/00