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Patent US2954932A successfully refreshed from Google Patents.
US3548632A
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US
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Apparatus for calibrating altimeters,air speed indicators,etc.
Assignee: Texas Instruments Inc
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Filing: 1968-12-30
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Granted: 1970-12-22
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Expires: 1988-12-30
Abstract
No abstract record available.
Inventors
- 👤 John B Damrel Jr
- 👤 Jerry L Fruit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:47
CPC Classifications
G; G01; G01L; G01L27/00; G01L27/002; G01L27/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3068700A
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US2893236A
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US3045470A
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US3060718A
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US3263482A
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US3243990A
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US3262305A
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US3266288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |