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3864828
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Information
Patent Grant
3864828
References
Source
Patent Number
3,864,828
Date Filed
Not available
Date Issued
Tuesday, February 11, 1975
50 years ago
CPC
H02G1/1226 - making a helical cut
B23D3/06 - in which the direction of feed is controlled by a copying device
US Classifications
030 - Cutlery
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