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Patent US2675496A successfully refreshed from Google Patents.
US2675496A
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High-pressure discharge lamp and seal therefor
Assignee: Westinghouse Electric Corp
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Filing: 1949-08-31
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Granted: 1954-04-13
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Expires: 1969-08-31
Abstract
No abstract record available.
Inventors
- 👤 Melvin C Unglert
- 👤 Hugh D Fraser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:43
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/24; H01J9/32; H01J9/323; H01J9/326; H01J5/00; H01J5/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2283189A
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US2241968A
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US2273437A
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Cited
US2353668A
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US2549328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |