Patent US2116688A successfully refreshed from Google Patents.
Patent US2799164A successfully refreshed from Google Patents.
US2799164A
Expired / Lapsed
US
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Apparatus for determining the rate of indicated air speed acceleration
Assignee: Individual
•
Filing: 1954-03-23
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Granted: 1957-07-16
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Expires: 1974-03-23
Abstract
No abstract record available.
Inventors
- 👤 Robert E Ruskin
- 👤 George W S Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:19
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/14; G01P5/16; G01P15/00; G01P15/16
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) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |