US2488422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulating system
Assignee: Westinghouse Electric Corp
•
Filing: 1947-12-30
•
Granted: 1949-11-15
•
Expires: 1967-12-30
Abstract
No abstract record available.
Inventors
- 👤 Clarence L Mershon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:54
CPC Classifications
B; B61; B61D; B61D17/00; B61D17/04; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/1909; G05D23/20; G05D23/22; Y; Y02; Y02T; Y02T30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1260230A
Cited
US1715750A
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US2079497A
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US2090692A
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US2170193A
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US2389939A
Cited
US2427729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |