US2774922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Step motor and control system therefor
Assignee: Individual
•
Filing: 1952-06-20
•
Granted: 1956-12-18
•
Expires: 1972-06-20
Abstract
No abstract record available.
Inventors
- 👤 Albert G Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:48
CPC Classifications
H; H02; H02K; H02K37/00; H02K37/02; H02K37/04; H02K37/22; H02P; H02P8/00; H02P8/14; H02P8/32; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |