US2765417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric discharge device
Assignee: General Electric Co
•
Filing: 1948-10-16
•
Granted: 1956-10-02
•
Expires: 1968-10-16
Abstract
No abstract record available.
Inventors
- 👤 Ted E Foulke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:00
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A GLOW DISCHARGE DEVICE HAVING A PRECISE TIMEBREAKDOWN CHARACTERISTIC UPON APPLICATION OF VOLTAGE THERETO, COMPRISING AN ENCLOSING ENVELOPE PERMEABLE TO RADIATION HAVING A WAVELENGTH BETWEEN ABOUT 3200 AND 4900 ANGSTROM UNITS, A PAIR OF COOPERATING ELECTRODES IN SAID ENVELOPE AT LEAST ONE OF SAID ELECTRODES BEING A COLD CATHODE HAVING AN ACTIVATING COATING OF OXIDES OF THE ALKALINE EARTH METALS, SEALING AND SUPPORTING STRUCTURE FOR SAID ELECTRODES, AN IONIZABLE MEDIUM WITHIN THE ENVELOPE COMPRISING A GAS FROM THE GROUP CONSISTING OF THE RARE GASES AND CAESIUM, MATERIAL POSITIONED EXTERNALLY OF AND CONTIGUOUS SAID ENVELOP AND PRODUCING RADIATION HAVING WAVELENGTH BETWEEN ABOUT 3200 AND 4900 ANGSTROM UNITS FOR EFFECTING PHOTO-EMISSION OF ELECTRONS FROM SAID ONE ELECTRODE, AND OXIDE COATING ON SAID STRUCTURE OF LIGHT METAL WHICH REPELS CESIUM FOR PREVENTING LEAKAGE BETWEEN SAID ELECTRODES.
Claim 2
Dependent Claim
133 words
A GLOW DISCHARGE DEVICE HAVING A PRECISE TIMEBREAKDOWN CHARACTERISTIC UPON APPLICATION OF VOLTAGE THERETO, COMPRISING AN ENCLOSING ENVELOPE PERMEABLE TO RADIATION HAVING A WAVELENGTH BETWEEN ABOUT 3200 AND 4900 ANGSTROM UNITS, A PAIR OF COOPERATING ELECTRODES IN SAID ENVELOPE AT LEAST ONE OF SAID ELECTRODES BEING A COLD CATHODE HAVING AN ACTIVATING COATING OF OXIDES OF THE ALKALINE EARTH METALS, SEALING AND SUPPORTING STRUCTURE FOR SAID ELECTRODES, AN IONIZABLE MEDIUM WITHIN THE ENVELOPE COMPRISING A GAS FROM THE GROUP CONSISTING OF THE RARE GASES AND CAESIUM, MATERIAL POSITIONED EXTERNALLY OF AND CONTIGUOUS SAID ENVELOP AND PRODUCING RADIATION HAVING WAVELENGTH BETWEEN ABOUT 3200 AND 4900 ANGSTROM UNITS FOR EFFECTING PHOTO-EMISSION OF ELECTRONS FROM SAID ONE ELECTRODE, AND OXIDE COATING ON SAID STRUCTURE OF LIGHT METAL WHICH REPELS CESIUM FOR PREVENTING LEAKAGE BETWEEN SAID ELECTRODES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |