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2309844
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Patent Grant
2309844
References
Source
Patent Number
2,309,844
Date Filed
Not available
Date Issued
Tuesday, February 2, 1943
81 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
D10 - Measuring, testing, or signalling instruments
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