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1458509
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Information
Patent Grant
1458509
References
Source
Patent Number
1,458,509
Date Filed
Not available
Date Issued
Tuesday, June 12, 1923
101 years ago
CPC
G06M1/083 - by mechanical means
G07C1/04 - wherein the time is indicated in figures
US Classifications
235 - Registers
116 - Signals and indicators
368 - Horology: time measuring systems or devices
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