US3396740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve apparatus responsive to fluid flow
Assignee: Individual
•
Filing: 1965-04-15
•
Granted: 1968-08-13
•
Expires: 1985-04-15
Abstract
No abstract record available.
Inventors
- 👤 Harold J Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:59
CPC Classifications
F; F02; F02D; F02D29/00; F02D29/04; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2703
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US877063A
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US1259910A
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US1478989A
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US1534212A
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US1605254A
Cited
FR882482A
Cited
US2605479A
Cited
US2756769A
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US2842150A
Cited
US3110036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |