Patent US3144769A successfully refreshed from Google Patents.
US3144769A
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US
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Means for measuring mass flow rate of fluid flow
Assignee: Brooks Instrument Co Inc
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Filing: 1960-04-04
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Granted: 1964-08-18
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Expires: 1980-04-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward E Francisco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:25
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/76; G01F1/78; G01F1/80; G01F1/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2308950A
Cited
US2683224A
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US2857761A
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US2896084A
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US2943487A
Cited
US3043143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |