Patent US2542717A successfully refreshed from Google Patents.
US2542717A
Expired / Lapsed
US
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Means for measuring or indicating the ratio of two forces and applications thereof to mach number indicators
Assignee: Power Jets Research and Development Ltd
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Filing: 1946-02-13
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Granted: 1951-02-20
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Expires: 1966-02-13
Abstract
No abstract record available.
Inventors
- 👤 Smith Austin Geoffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:36
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/14; G01P5/16; G01P5/17; G01P5/175; G01L; G01L1/00; G01L1/20; G01L5/00; G01L5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US128397A
Cited
US1656262A
Cited
US1433536A
Cited
US1562936A
Cited
US2269068A
Cited
US2364728A
Cited
US2347695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |