US2695375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit for gas discharge lamps
Assignee: Individual
•
Filing: 1951-04-19
•
Granted: 1954-11-23
•
Expires: 1971-04-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Alfred L Mendenhall
- 👤 Charles S Federle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:47
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/30; H03C3/32; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/58; H01J25/587; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/18; Y; Y10; Y10S; Y10S315/00; Y10S315/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1922984A
Cited
US2413681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |