Invention Grant
- Patent Title: Electronic tube circuit
- Patent Title (中): 电子管电路
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Application No.: US19478838Application Date: 1938-03-09
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Publication No.: US2235190APublication Date: 1941-03-18
- Inventor: PETRUS ALMA GERRIT HENDRIK , HENDRIK JONKER JOHAN LODEWIJK
- Applicant: RCA CORP
- Assignee: Spire Corp
- Current Assignee: Spire Corp
- Priority: NL202088X 1937-03-10
- Main IPC: G05F1/52
- IPC: G05F1/52 ; H01J43/02
Information query
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