Patent US2393813A successfully refreshed from Google Patents.
US2393813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand generator
Assignee: Individual
•
Filing: 1942-03-16
•
Granted: 1946-01-29
•
Expires: 1962-03-16
Abstract
No abstract record available.
Inventors
- 👤 Roggan Francis Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:01
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/18; H02K7/1807; H02K7/1861; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/19; Y10T74/19642; Y10T74/19679; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20744; Y10T74/20756
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) | 1949-01-28 | 1949-07-30 | 1950-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-01-28 | 1953-07-30 | 1954-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-01-28 | 1957-07-30 | 1958-01-29 | $7700.00 | Window Closed / Lapsed |