Identification of key-use
United States Patent 3324586
US Patent References:
/0312545.html
- - 0312545

/1219706.html
- - 1219706

Key
- - 1653581

Reinforced key
- - 3093920


Inventors:
Mitchell, Nancy J.
Publication Date:
06/13/1967
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Assignee:
Mitchell, Nancy J.
Primary Class:
40/330
International Classes:
E05B19/24; E05B19/00