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1928040
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Patent Grant
1928040
References
Source
Patent Number
1,928,040
Date Filed
Not available
Date Issued
Tuesday, September 26, 1933
91 years ago
CPC
G04B23/06 - adjustable for several preselected times with automatic stopping of the signal
US Classifications
368 - Horology: time measuring systems or devices
968 - Horology
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