Patent US2143962A successfully refreshed from Google Patents.
US2143962A
Expired / Lapsed
US
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Fluid flow meter
Assignee: Individual
•
Filing: 1936-12-14
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Granted: 1939-01-17
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Expires: 1956-12-14
Abstract
No abstract record available.
Inventors
- 👤 Blair H Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:36
CPC Classifications
G; G01; G01P; G01P5/00; E; E21; E21B; E21B47/00; E21B47/10; G01F; G01F3/00; G01F3/02; G01F3/04; G01F3/06; G01F3/12; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5757; Y10T70/5765; Y10T70/577; Y10T70/5774
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-01-16 | 1942-07-18 | 1943-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-01-16 | 1946-07-18 | 1947-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-01-16 | 1950-07-18 | 1951-01-17 | $7700.00 | Window Closed / Lapsed |