Invention Grant
- Patent Title: Flow control valve
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Application No.: US43520754Application Date: 1954-06-08
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Publication No.: US2912997APublication Date: 1959-11-17
- Inventor: GRISWOLD DAVID E
- Applicant: DONALD G GRISWOLD
- Assignee: Donald G Griswold
- Current Assignee: Donald G Griswold
- Priority: US43520754 1954-06-08
- Main IPC: F16K31/365
- IPC: F16K31/365 ; G05D7/01
Information query
