US2794341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vortex whistle measuring instrument for fluid flow rates and/or pressure
Assignee: General Electric Co
•
Filing: 1953-07-13
•
Granted: 1957-06-04
•
Expires: 1973-07-13
Abstract
No abstract record available.
Inventors
- 👤 Vonnegut Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:55
CPC Classifications
G; G01; G01L; G01L7/00; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/32; G01F1/325
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1215135A
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US1935444A
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US1952281A
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US2492371A
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US2518149A
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US2519015A
Cited
US2582232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |