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2762434
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Information
Patent Grant
2762434
References
Source
Patent Number
2,762,434
Date Filed
Not available
Date Issued
Tuesday, September 11, 1956
67 years ago
CPC
G06K21/06 - Apparatus or tools adapted for slotting or otherwise marking information-retrieval cards
Y10S83/917 - Notching
US Classifications
234 - Selective cutting
083 - Cutting
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