US3377494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent lamp envelope with transparent protective coatings
Assignee: Philips North America LLC
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Filing: 1965-05-24
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Granted: 1968-04-09
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Expires: 1985-05-24
Abstract
No abstract record available.
Inventors
- 👤 Robert W Repsher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:03
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C03C17/256; C09; C09K; C09K11/00; C09K11/02; C09K11/025; H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/35; H01J61/38; H01J61/42; H01J61/46; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/212; C03C2217/22; C03C2217/23; C03C2218/00; C03C2218/10; C03C2218/11
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) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |