Patent US2651749A successfully refreshed from Google Patents.
US2651749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct current supply system
Assignee: General Electric Co
•
Filing: 1952-08-11
•
Granted: 1953-09-08
•
Expires: 1972-08-11
Abstract
No abstract record available.
Inventors
- 👤 Gay W Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:24
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/16; H02J7/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1328321A
Cited
US1602787A
Cited
US1985641A
Cited
US2012588A
Cited
US2157840A
Cited
US2421645A
Cited
US2557298A
Cited
US2519650A
Cited
US2558644A
Cited
US2607910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |