Patent US3317705A successfully refreshed from Google Patents.
Patent US2820364A successfully refreshed from Google Patents.
US2820364A
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US
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Fluid flow measuring apparatus
Assignee: Bendix Aviation Corp
•
Filing: 1952-01-31
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Granted: 1958-01-21
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Expires: 1972-01-31
Abstract
No abstract record available.
Inventors
- 👤 James E Bevins
- 👤 Edward J Hazen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:17
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/50; G01F15/00; G01F15/02; G01F15/022; Y; Y10; Y10T; Y10T137/00; Y10T137/3367; Y10T137/3421; Y10T137/7722; Y10T137/7758; Y10T137/7759; Y10T137/776
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1487402A
Cited
US1677834A
Cited
US1682602A
Cited
US1644684A
Cited
US2082539A
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US2397038A
Cited
US2661023A
Cited
US2595250A
Cited
GB612054A
Cited
US2614432A
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US2530981A
Cited
US2546657A
Cited
US2609831A
Cited
US2607214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |