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3673845
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Information
Patent Grant
3673845
References
Source
Patent Number
3,673,845
Date Filed
Not available
Date Issued
Tuesday, July 4, 1972
52 years ago
CPC
B21D11/07 - Making serpentine-shaped articles by bending essentially in one plane
B21D53/045 - by inflating partially united plates
Y10S29/042 - Tension applied during working
Y10T29/49391 - Tube making or reforming
US Classifications
072 - Metal deforming
029 - Metal working
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