US2938533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shutoff valve
Assignee: Garrett Corp
•
Filing: 1956-12-04
•
Granted: 1960-05-31
•
Expires: 1976-12-04
Abstract
No abstract record available.
Inventors
- 👤 Raymond W Jensen
- 👤 Riley James Hampton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:44
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/12; F16K1/126; Y; Y10; Y10T; Y10T137/00; Y10T137/3367
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US845063A
Cited
US1801049A
Cited
US2059729A
Cited
US2257209A
Cited
US2192499A
Cited
US2330881A
Cited
US2351873A
Cited
US2571538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |