US2685662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for igniting and operating gaseous discharge devices
Assignee: Advance Transformer Co
•
Filing: 1950-05-05
•
Granted: 1954-08-03
•
Expires: 1970-05-05
Abstract
No abstract record available.
Inventors
- 👤 Albert E Feinberg
- 👤 Berger Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:31
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/20; H05B41/23; H05B41/232
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2427225A
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US2515109A
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US2464971A
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US2552111A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |