Patent US764439A successfully refreshed from Google Patents.
US764439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlling system for electric motors.
Assignee: Individual
•
Filing: 1904-03-21
•
Granted: 1904-07-05
•
Expires: 1924-03-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Eastwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:48
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/02; B66B1/06; B66B1/08; H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/292; H02P7/293
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) | 1907-07-05 | 1908-01-04 | 1908-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-07-05 | 1912-01-04 | 1912-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-07-05 | 1916-01-04 | 1916-07-05 | $7700.00 | Window Closed / Lapsed |