Invention Grant
- Patent Title: Piston ring
- Patent Title (中): 活塞环
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Application No.: US86218759Application Date: 1959-12-28
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Publication No.: US3066943APublication Date: 1962-12-04
- Inventor: BRENNEKE ARTHUR M
- Applicant: PERFECT CIRCLE CORP
- Assignee: Perfect Circle Corp
- Current Assignee: Perfect Circle Corp
- Priority: US86218759 1959-12-28
- Main IPC: F16J9/06
- IPC: F16J9/06
Information query
