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3715978
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Information
Patent Grant
3715978
References
Source
Patent Number
3,715,978
Date Filed
Not available
Date Issued
Tuesday, February 13, 1973
51 years ago
CPC
B41J9/14 - Means for selecting or suppressing individual hammers
B41J9/10 - of more than one hammer
US Classifications
101 - Printing
400 - Typewriting machines
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