US3287593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold cathode electron discharge device
Assignee: Thales SA
•
Filing: 1961-12-12
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Granted: 1966-11-22
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Expires: 1981-12-12
Abstract
No abstract record available.
Inventors
- 👤 Charles Daniel
- 👤 Veron Serge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:49
CPC Classifications
H; H01; H01J; H01J63/00; H01J63/08; H01J17/00; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/38; H01J29/385; H01J29/46; H01J29/48; H01J29/481; H01J2893/00; H01J2893/0064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A COLD CATHODE STRUCTURE COMPRISING A GAS-TIGHT ENVELOPE INCLUDING A METALLIC PORTION AND A WINDOW TRANSPARENT TO LIGHT, SAID ENVELOPE BEING FILLED WITH A RARIFIED GAS, A PHOTO-EMISSIVE COATING ON THE OUTER SURFACE OF SAID WINDOW, AN ELECTRODE DISPOSED WITHIN SAID ENVELOPE, AND MEANS FOR ESTABLISHING A DIFFERENCE OF POTENTIAL BETWEEN SAID INNER ELECTRODE AND SAID METALLIC PORTION OF THE ENVELOPE, THEREBY TO PRODUCE LUMINESCENT ELECTRIC DISCHARGES IN SAID GAS.
Claim 2
Dependent Claim
70 words
A COLD CATHODE STRUCTURE COMPRISING A GAS-TIGHT ENVELOPE INCLUDING A METALLIC PORTION AND A WINDOW TRANSPARENT TO LIGHT, SAID ENVELOPE BEING FILLED WITH A RARIFIED GAS, A PHOTO-EMISSIVE COATING ON THE OUTER SURFACE OF SAID WINDOW, AN ELECTRODE DISPOSED WITHIN SAID ENVELOPE, AND MEANS FOR ESTABLISHING A DIFFERENCE OF POTENTIAL BETWEEN SAID INNER ELECTRODE AND SAID METALLIC PORTION OF THE ENVELOPE, THEREBY TO PRODUCE LUMINESCENT ELECTRIC DISCHARGES IN SAID GAS.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |