US2975635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for directly measuring mass of fluid flow per unit of time
Assignee: Black Sivalls and Bryson Inc
•
Filing: 1956-06-12
•
Granted: 1961-03-21
•
Expires: 1976-06-12
Abstract
No abstract record available.
Inventors
- 👤 Herbert S Kindler
- 👤 Charles M Halsell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:40
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)
US2735299A
Cited
US720188A
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US1467565A
Cited
US2472609A
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US2709366A
Cited
US2697942A
Cited
US2772567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |