Invention Grant
- Patent Title: Concrete pump
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Application No.: US55817531Application Date: 1931-08-19
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Publication No.: US1991342APublication Date: 1935-02-12
- Inventor: BALL CHARLES F
- Applicant: CHAIN BELT CO
- Assignee: Chain Belt Co
- Current Assignee: Chain Belt Co
- Priority: US55817531 1931-08-19
- Main IPC: F03C1/22
- IPC: F03C1/22 ; F04B1/02 ; F04B9/117 ; F04B15/02 ; F04B53/16
Information query
