US1508770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System of motor control
Assignee: NILES BEMENTPOND CO
•
Filing: 1920-11-08
•
Granted: 1924-09-16
•
Expires: 1940-11-08
Abstract
No abstract record available.
Inventors
- 👤 Harold L Blood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:09
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/54
Claims Analysis
Total Claims: 0
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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) | 1927-09-16 | 1928-03-17 | 1928-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-09-16 | 1932-03-17 | 1932-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-09-16 | 1936-03-17 | 1936-09-16 | $7700.00 | Window Closed / Lapsed |