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3897073
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Information
Patent Grant
3897073
References
Source
Patent Number
3,897,073
Date Filed
Not available
Date Issued
Tuesday, July 29, 1975
49 years ago
CPC
F16L21/025 - Rolling sealing rings
F16L13/113 - for concrete pipes
US Classifications
277 - Seal for a joint or juncture
285 - Pipe joints or couplings
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