US2474809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry-plate rectifier unit
Assignee: Individual
•
Filing: 1945-08-01
•
Granted: 1949-07-05
•
Expires: 1965-08-01
Abstract
No abstract record available.
Inventors
- 👤 Jerome G Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:44
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/40; H10W40/47; H10W40/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2189617A
Cited
US1649742A
Cited
US1797587A
Cited
FR701486A
Cited
US1947240A
Cited
US2024742A
Cited
US2112733A
Cited
US2288341A
Cited
US2279101A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |