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3825836
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Information
Patent Grant
3825836
References
Source
Patent Number
3,825,836
Date Filed
Not available
Date Issued
Tuesday, July 23, 1974
50 years ago
CPC
H03K17/28 - Modifications for introducing a time delay before switching
G04C21/28 - by closing a contact to put into action electro-acoustic means
G04C23/00 - Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals
Y10T307/951 - With time delay or retardation means
US Classifications
455 - Telecommunications
307 - Electrical transmission or interconnection systems
340 - Communications: electrical
968 - Horology
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