US2056661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for operating electric discharge lamps in series
Assignee: General Electric Vapor Lamp Co
•
Filing: 1934-07-13
•
Granted: 1936-10-06
•
Expires: 1954-07-13
Abstract
No abstract record available.
Inventors
- 👤 Ted E Foulke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:31
CPC Classifications
H; H05; H05B; H05B41/00; H01; H01J; H01J61/00; H01J61/02; H01J61/56
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-10-06 | 1940-04-06 | 1940-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-10-06 | 1944-04-06 | 1944-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-10-06 | 1948-04-06 | 1948-10-06 | $7700.00 | Window Closed / Lapsed |