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US3544830A
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US
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Quartz-halogen lamp and method of making
Assignee: GTE Sylvania Inc
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Filing: 1968-10-25
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Granted: 1970-12-01
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Expires: 1988-10-25
Abstract
No abstract record available.
Inventors
- 👤 Frederick J George
- 👤 Edmund R Kern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:06
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/02; H01K1/16; H01K3/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49799
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2315504A
Cited
US3441772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |