US2929250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic control device
Assignee: Westinghouse Electric Corp
•
Filing: 1957-08-12
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Granted: 1960-03-22
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Expires: 1977-08-12
Abstract
No abstract record available.
Inventors
- 👤 Jr William O Passarelli
- 👤 Wolf Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:23
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/14; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229; Y10T74/1232; Y10T74/1254; Y10T74/1261; Y10T74/1279
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |