US2500191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensated electric motor
Assignee: Individual
•
Filing: 1945-11-19
•
Granted: 1950-03-14
•
Expires: 1965-11-19
Abstract
No abstract record available.
Inventors
- 👤 Lee Royal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:46
CPC Classifications
H; H02; H02K; H02K27/00; H02K27/04; H02K1/00; H02K1/06; H02K1/12; H02K1/14; H02K1/146; H02K1/148; H02K3/00; H02K3/04; H02K3/18; H02P; H02P25/00; H02P25/16; H02P25/18; H02P25/182; Y; Y10; Y10S; Y10S388/00; Y10S388/923; Y10S388/924; Y10S388/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US438656A
Cited
US458646A
Cited
US1314132A
Cited
US1554647A
Cited
US1501372A
Cited
US1732367A
Cited
US1641548A
Cited
US1767146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |