Patent US3059939A successfully refreshed from Google Patents.
US1503818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric-motor governor
Assignee: Individual
•
Filing: 1922-04-14
•
Granted: 1924-08-05
•
Expires: 1942-04-14
Abstract
No abstract record available.
Inventors
- 👤 Herbert W Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:12
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/063
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) | 1927-08-05 | 1928-02-04 | 1928-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-08-05 | 1932-02-04 | 1932-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-08-05 | 1936-02-04 | 1936-08-05 | $7700.00 | Window Closed / Lapsed |