Invention Grant
- Patent Title: Friction member
- Patent Title (中): 摩擦件
-
Application No.: US65160123Application Date: 1923-07-14
-
Publication No.: US1670224APublication Date: 1928-05-15
- Inventor: WARREN WATSON JOHN
- Applicant: WARREN WATSON JOHN
- Assignee: Watson John Warren
- Current Assignee: Watson John Warren
- Priority: US65160123 1923-07-14
- Main IPC: F16D65/00
- IPC: F16D65/00 ; F16D69/00 ; F16D69/02
Information query
