US3441774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogen-cycle incandescent lamp with planar filament
Assignee: General Electric Co
•
Filing: 1966-12-12
•
Granted: 1969-04-29
•
Expires: 1986-12-12
Abstract
No abstract record available.
Inventors
- 👤 Melvin L Stone
- 👤 George K Danko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:25
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/18; H01K1/28; H01K1/34; Y; Y02; Y02B; Y02B20/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3265923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |