Patent US2931948A successfully refreshed from Google Patents.
US2931948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash producing circuit
Assignee: Ford Motor Co
•
Filing: 1956-08-23
•
Granted: 1960-04-05
•
Expires: 1976-08-23
Abstract
No abstract record available.
Inventors
- 👤 Robert L Forgacs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:58
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/30; H05B41/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2074930A
Cited
US2478901A
Cited
US2478905A
Cited
US2078671A
Cited
US2400457A
Cited
US2700120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |