US3198981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glow lamp and photosensitive assembly
Assignee: General Precision Inc
•
Filing: 1962-06-19
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Granted: 1965-08-03
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Expires: 1982-06-19
Abstract
No abstract record available.
Inventors
- 👤 Bois Norman L Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:28
CPC Classifications
G; G06; G06E; G06E3/00; G06E3/001; H; H01; H01J; H01J17/00; H01J17/02; H01J17/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A GLOW LAMP COMPRISING, A GAS-TIGHT ENVELOPE HAVING A TRANSPARENT END FACE, A FILLING GAS AT LOW PRESSURE WITHIN SAID ENVELOPE, MEANS RENDERING THE INNER SURFACE OF SAID TRANSPARENT FACE CONDUCTIVE, A CONICAL CONDUCTIVE CATHODE DISPOSED WITHIN SAID ENVELOPE, SAID CONICAL CATHODE FACING SAID TRANSPARENT FACE, AND MEANS APPLYING DIRECT POTENTIAL BETWEEN SAID INNER CONDUCTIVE SURFACE AND SAID CONICAL CONDUCTIVE CATHODE.
Claim 2
Dependent Claim
61 words
A GLOW LAMP COMPRISING, A GAS-TIGHT ENVELOPE HAVING A TRANSPARENT END FACE, A FILLING GAS AT LOW PRESSURE WITHIN SAID ENVELOPE, MEANS RENDERING THE INNER SURFACE OF SAID TRANSPARENT FACE CONDUCTIVE, A CONICAL CONDUCTIVE CATHODE DISPOSED WITHIN SAID ENVELOPE, SAID CONICAL CATHODE FACING SAID TRANSPARENT FACE, AND MEANS APPLYING DIRECT POTENTIAL BETWEEN SAID INNER CONDUCTIVE SURFACE AND SAID CONICAL CONDUCTIVE CATHODE.
References Cited (Backward Citations)
US3070306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |