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3611552
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Information
Patent Grant
3611552
References
Source
Patent Number
3,611,552
Date Filed
Not available
Date Issued
Tuesday, October 12, 1971
52 years ago
CPC
B21D39/04 - of tubes with tubes of tubes with rods
B21D51/16 - characterised by the use of the objects
B31F1/0093 - Fixing elements to tube ends
B65H75/187 - Reinforcing end caps
Y10T29/49922 - by bending over projecting prongs
Y10T29/4994 - Radially expanding internal tube
US Classifications
029 - Metal working
072 - Metal deforming
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