Patent US2468853A successfully refreshed from Google Patents.
Patent US2761087A successfully refreshed from Google Patents.
US2761087A
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Electric discharge lamp
Assignee: General Electric Co
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Filing: 1951-08-14
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Granted: 1956-08-28
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Expires: 1971-08-14
Abstract
No abstract record available.
Inventors
- 👤 Bowtell James Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:19
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/12; H01J61/18; H01J61/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
AN ELECTRIC GASEOUS DISCHARGE FLASH LAMP COMPRISING A TUBULAR ENVELOPE OF A FEW MILLIMETERS DIAMETER AND CONTAINING AN IONIZABLE LUMINOSITY-PRODUCING INERT GAS FILLING PRODUCTIVE OF SUBSTANTIALLY THE ENTIRE LUMINOUS OUTPUT OF THE LAMP UNDER PULSE ENERGIZATION, A PAIR OF SOLID METAL ROD-LIKE ELECTRODES PROJECTING A SHORT DISTANCE INTO OPPOSITE ENDS OF SAID ENVELOPE FOR AN ELECTRIC DISCHARGE THEREBETWEEN, AND AN ACTIVATING COATING CONSISTING SOLELY OF ALKALI METAL ON AT LEAST ONE OF SAID ELECTRODES AND DEPOSITED THEREON FROM A SMALL QUANTITY OF LIQUID ALKALI METAL AMALGAM IN SAID ENVELOPE AND ARRANGED TO CONTACT SAID ELECTRODE, THE QUANTITY OF SAID AMALGAM BEING INSUFFICIENT TO COMPLETELY SUBMERGE THE ELECTRODES IN ANY POSITION OF THE LAMP.
Claim 2
Dependent Claim
113 words
AN ELECTRIC GASEOUS DISCHARGE FLASH LAMP COMPRISING A TUBULAR ENVELOPE OF A FEW MILLIMETERS DIAMETER AND CONTAINING AN IONIZABLE LUMINOSITY-PRODUCING INERT GAS FILLING PRODUCTIVE OF SUBSTANTIALLY THE ENTIRE LUMINOUS OUTPUT OF THE LAMP UNDER PULSE ENERGIZATION, A PAIR OF SOLID METAL ROD-LIKE ELECTRODES PROJECTING A SHORT DISTANCE INTO OPPOSITE ENDS OF SAID ENVELOPE FOR AN ELECTRIC DISCHARGE THEREBETWEEN, AND AN ACTIVATING COATING CONSISTING SOLELY OF ALKALI METAL ON AT LEAST ONE OF SAID ELECTRODES AND DEPOSITED THEREON FROM A SMALL QUANTITY OF LIQUID ALKALI METAL AMALGAM IN SAID ENVELOPE AND ARRANGED TO CONTACT SAID ELECTRODE, THE QUANTITY OF SAID AMALGAM BEING INSUFFICIENT TO COMPLETELY SUBMERGE THE ELECTRODES IN ANY POSITION OF THE LAMP.
References Cited (Backward Citations)
US1088740A
Cited
US1656898A
Cited
US2228327A
Cited
US2166951A
Cited
US2073715A
Cited
US2391573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |