US3177711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine flowmeter
Assignee: Fischer and Porter Co
•
Filing: 1961-09-08
•
Granted: 1965-04-13
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Expires: 1981-09-08
Abstract
No abstract record available.
Inventors
- 👤 Donald L Ham
- 👤 Roy F Schmoock
- 👤 Shaffer Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:09
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/10; G01F1/115
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |