Invention Grant
- Patent Title: Pipe coupling having centering means
- Patent Title (中): 具有定心装置的管接头
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Application No.: US85815859Application Date: 1959-12-08
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Publication No.: US3151889APublication Date: 1964-10-06
- Inventor: FRANK PETRIN
- Applicant: FRANK PETRIN
- Assignee: Petrin Frank
- Current Assignee: Petrin Frank
- Priority: US85815859 1959-12-08
- Main IPC: F16L19/02
- IPC: F16L19/02 ; F16L19/08
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