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1803531
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Information
Patent Grant
1803531
References
Source
Patent Number
1,803,531
Date Filed
Not available
Date Issued
Tuesday, May 5, 1931
93 years ago
CPC
E05B37/04 - with tumbler discs on a single axis, all the discs being adjustable by rotating a shiftable knob
Y10T70/7316 - Combination upsetting
US Classifications
070 - Locks
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