US2995932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for measuring mach number
Assignee: Individual
•
Filing: 1953-06-24
•
Granted: 1961-08-15
•
Expires: 1973-06-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Everett J Hardgrave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:02
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/14; G01P5/16; G01P5/17; G01P5/175
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1085184A
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US1426698A
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US2343282A
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US2592176A
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US2441042A
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US2482701A
Cited
US2618972A
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US2570129A
Cited
US2592322A
Cited
US2641105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |