Patent US1691541A successfully refreshed from Google Patents.
Patent FR1143576A successfully refreshed from Google Patents.
Patent US2916669A successfully refreshed from Google Patents.
US2916669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starting circuit for gaseous discharge lamps
Assignee: Westinghouse Electric Corp
•
Filing: 1958-06-06
•
Granted: 1959-12-08
•
Expires: 1978-06-06
Abstract
No abstract record available.
Inventors
- 👤 Theodore C Retzer
- 👤 Robert C Meola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:21
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/20; H05B41/23; H05B41/231; Y; Y10; Y10S; Y10S315/00; Y10S315/05
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2549353A
Cited
US2723366A
Cited
US2708251A
Cited
US2727188A
Cited
US2728871A
Cited
US2825005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |