US2938502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal control mechanism
Assignee: Westinghouse Electric Corp
•
Filing: 1958-11-20
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Granted: 1960-05-31
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Expires: 1978-11-20
Abstract
No abstract record available.
Inventors
- 👤 Robert A Neal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:32
CPC Classifications
G; G05; G05D; G05D13/00; G05D13/08; F; F16; F16H; F16H61/00; F16H61/02; F16H2710/00; F16H2710/04; Y; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/108; Y10T137/1135
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) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |