Patent US1567519A successfully refreshed from Google Patents.
Patent US2714685A successfully refreshed from Google Patents.
US2714685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low pressure fluorescent and discharge lamps
Assignee: Westinghouse Electric Corp
•
Filing: 1951-08-25
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Granted: 1955-08-02
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Expires: 1971-08-25
Abstract
No abstract record available.
Inventors
- 👤 Meister George
- 👤 Thomas H Heine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:03
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/12; H01J61/18; H01J61/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A DISCHARGE LAMP COMPRISING A TRANSLUCENT VITREOUS ENVELOPE, A PAIR OF ELECTRODES IN SAID ENVELOPE, AND A CONTAINED MIXTURE OF XENON AND KRYPTON AT A PRESSURE BETWEEN 3/4 AND 1 1/2 MM. OF MERCURY, ADMIXED WITH MERCURY VAPOR, THE PROPORTION OF THE XENON BEING BETWEEN 70% AND 80%, AND THAT OF THE KRYPTON BEING BETWEEN 30% AND 20% OF THE GAS MIXTURE.
Claim 2
Dependent Claim
62 words
A DISCHARGE LAMP COMPRISING A TRANSLUCENT VITREOUS ENVELOPE, A PAIR OF ELECTRODES IN SAID ENVELOPE, AND A CONTAINED MIXTURE OF XENON AND KRYPTON AT A PRESSURE BETWEEN 3/4 AND 1 1/2 MM. OF MERCURY, ADMIXED WITH MERCURY VAPOR, THE PROPORTION OF THE XENON BEING BETWEEN 70% AND 80%, AND THAT OF THE KRYPTON BEING BETWEEN 30% AND 20% OF THE GAS MIXTURE.
References Cited (Backward Citations)
US1726107A
Cited
US1882032A
Cited
US1882609A
Cited
US1876083A
Cited
US1906119A
Cited
US1994381A
Cited
US2007919A
Cited
US2022219A
Cited
US2007926A
Cited
US1908647A
Cited
US2007934A
Cited
US2094450A
Cited
US2407379A
Cited
US2421571A
Cited
US2492619A
Cited
US2473642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-01 | 1959-01-31 | 1959-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-01 | 1963-01-31 | 1963-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-01 | 1967-01-31 | 1967-08-02 | $7700.00 | Window Closed / Lapsed |