Patent US676827A successfully refreshed from Google Patents.
Patent US3147928A successfully refreshed from Google Patents.
US3147928A
Expired / Lapsed
US
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Lighting device
Assignee: Superior Electric Co
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Filing: 1962-04-26
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Granted: 1964-09-08
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Expires: 1982-04-26
Abstract
No abstract record available.
Inventors
- 👤 William P Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:02
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/04; F21S; F21S6/00; F21S6/002; H; H05; H05B; H05B39/00; H05B39/04; H05B39/08; H05B39/083; Y; Y10; Y10S; Y10S323/00; Y10S323/905
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |