US2849656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switch-start discharge lamp circuit
Assignee: General Electric Co
•
Filing: 1953-09-15
•
Granted: 1958-08-26
•
Expires: 1973-09-15
Abstract
No abstract record available.
Inventors
- 👤 Walter J Karash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:07
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/18; H05B41/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2305487A
Cited
US2462336A
Cited
US2491854A
Cited
US2504549A
Cited
US2597604A
Cited
US2509188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |