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3449937
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Information
Patent Grant
3449937
References
Source
Patent Number
3,449,937
Date Filed
Not available
Date Issued
Tuesday, June 17, 1969
55 years ago
CPC
B21J5/08 - Upsetting
B21K1/14 - fittings
B21K21/08 - Shaping hollow articles with different cross-section in longitudinal direction
F02M55/005 - for high pressure conduits
US Classifications
072 - Metal deforming
138 - Pipes and tubular conduits
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