US2779496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weathertight ballast
Assignee: General Electric Co
•
Filing: 1956-03-07
•
Granted: 1957-01-29
•
Expires: 1976-03-07
Abstract
No abstract record available.
Inventors
- 👤 Henderson Wayne Lee Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:23
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/02; H01F27/022; Y; Y10; Y10S; Y10S174/00; Y10S174/02; Y10S206/00; Y10S206/806
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1235069A
Cited
US1296653A
Cited
US1352002A
Cited
US2489245A
Cited
US2550362A
Cited
US2701174A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |