US2968315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Predetermined pressure shut-off valve
Assignee: Individual
•
Filing: 1958-02-05
•
Granted: 1961-01-17
•
Expires: 1978-02-05
Abstract
No abstract record available.
Inventors
- 👤 Robert M Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:35
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/20; F16K17/22; F16K17/24; F16K17/28; F16K17/30; Y; Y10; Y10T; Y10T137/00; Y10T137/7504; Y10T137/7722; Y10T137/7837; Y10T137/7869
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1355663A
Cited
US891808A
Cited
US1418096A
Cited
US2136898A
Cited
US2591514A
Cited
US2781775A
Cited
US2750956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |