US2670451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Short arc high-pressure vapor discharge lamp
Assignee: Westinghouse Electric Corp
•
Filing: 1950-01-12
•
Granted: 1954-02-23
•
Expires: 1970-01-12
Abstract
No abstract record available.
Inventors
- 👤 George A Freeman
- 👤 Emile M Bellott
- 👤 Hugh D Fraser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:16
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/84; H01J61/86
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2251046A
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US2166951A
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US2153009A
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US2104652A
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US2177690A
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US2194652A
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US2171234A
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US2217438A
Cited
GB573141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |