US3135913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for testing tubes for all possible short circuits between electrodes, in asingle operation
Assignee: RCA Corp
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Filing: 1959-12-30
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Granted: 1964-06-02
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Expires: 1979-12-30
Abstract
No abstract record available.
Inventors
- 👤 James L Hodgdon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:25
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/24; G01R31/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN APPARATUS OF THE TYPE WHEREIN EACH OF A PLURALITY OF SIMILAR THYRATRON CIRCUITS, NORMALLY BIASED TO CUT OFF, HAS A SENSING RESISTOR CONNECTED IN THE INPUT MEANS OF EACH THYRATRON TO TRIGGER SAID THRATRON ON WHEN CURRENT FLOWS THROUGH SAID SENSING RESISTOR, A SOURCE OF UNIDIRECTIONAL VOLTAGES OF DIFFERENT AMPLITUDES, A FULL-WAVE BRIDGE RECTIFIER FOR EACH CIRCUIT HAVING TWO INPUT TERMINALS AND TWO OUTPUT TERMINALS, MEANS CONNECTING EACH OF SAID
Claim 2
Dependent Claim
71 words
IN APPARATUS OF THE TYPE WHEREIN EACH OF A PLURALITY OF SIMILAR THYRATRON CIRCUITS, NORMALLY BIASED TO CUT OFF, HAS A SENSING RESISTOR CONNECTED IN THE INPUT MEANS OF EACH THYRATRON TO TRIGGER SAID THRATRON ON WHEN CURRENT FLOWS THROUGH SAID SENSING RESISTOR, A SOURCE OF UNIDIRECTIONAL VOLTAGES OF DIFFERENT AMPLITUDES, A FULL-WAVE BRIDGE RECTIFIER FOR EACH CIRCUIT HAVING TWO INPUT TERMINALS AND TWO OUTPUT TERMINALS, MEANS CONNECTING EACH OF SAID
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |