US2926883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shut-off valve
Assignee: Individual
•
Filing: 1957-01-03
•
Granted: 1960-03-01
•
Expires: 1977-01-03
Abstract
No abstract record available.
Inventors
- 👤 John R Prybylski
- 👤 Clement J Turansky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:25
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/94; F02K9/42; F02K9/44; F02K9/56; F16; F16K; F16K23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US845063A
Cited
GB585032A
Cited
US2676611A
Cited
US2725891A
Cited
US2751923A
Cited
FR1054190A
Cited
US2753146A
Cited
US2799466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |