US3054922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermediate pressure wall stabilized gas lamp
Assignee: General Electric Co
•
Filing: 1959-08-26
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Granted: 1962-09-18
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Expires: 1979-08-26
Abstract
No abstract record available.
Inventors
- 👤 William C Louden
- 👤 Schmidt Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:26
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/12; H01J61/16; H01J61/30; H01J61/302; H01J61/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
AN INTERMEDIATE PRESSURE GAS ARC LAMP COMPRISING A TUBULAR ELONGATED ENVELOPE OF SINTERED TRANSPARENT HIGH DENSITY POLYCRYSTALLINE ALUMINA HAVING A PAIR OF ELECTRODES SEALED INTO OPPOSITE ENDS, AN INERT GAS WITHIN SAID ENVELOPE DEVELOPING AN OPERATING PRESSURE IN THE RANGE OF 1 TO 10 ATMOSPHERES AT VOLUME LOADINGS IN THE RANGE OF APPROXIMATELY 200 TO 800 WATTS PER CUBIC CENTIMETER, THE DISCHARGE SPACE OF SAID ENVELOPE HAVING AN EFFECTIVE LENGTH SEVERAL TIMES ITS DIAMETER AND PROVIDING WALL STABILIZATION.
Claim 2
Dependent Claim
78 words
AN INTERMEDIATE PRESSURE GAS ARC LAMP COMPRISING A TUBULAR ELONGATED ENVELOPE OF SINTERED TRANSPARENT HIGH DENSITY POLYCRYSTALLINE ALUMINA HAVING A PAIR OF ELECTRODES SEALED INTO OPPOSITE ENDS, AN INERT GAS WITHIN SAID ENVELOPE DEVELOPING AN OPERATING PRESSURE IN THE RANGE OF 1 TO 10 ATMOSPHERES AT VOLUME LOADINGS IN THE RANGE OF APPROXIMATELY 200 TO 800 WATTS PER CUBIC CENTIMETER, THE DISCHARGE SPACE OF SAID ENVELOPE HAVING AN EFFECTIVE LENGTH SEVERAL TIMES ITS DIAMETER AND PROVIDING WALL STABILIZATION.
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) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |