US2929009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor control systems
Assignee: Individual
•
Filing: 1951-06-21
•
Granted: 1960-03-15
•
Expires: 1971-06-21
Abstract
No abstract record available.
Inventors
- 👤 Henry D James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:28
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/30; H02P7/305; B; B66; B66B; B66B1/00; B66B1/02; B66B1/06; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/913; Y10T; Y10T29/00; Y10T29/53; Y10T29/53039
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1426123A
Cited
US1428588A
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GB389801A
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US2482101A
Cited
US2546271A
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US2519339A
Cited
US2558086A
Cited
US2555992A
Cited
US2622239A
Cited
US2600308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |