US2923315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
removable valve
Assignee: —
•
Filing: —
•
Granted: 1960-02-02
•
Expires: 1977-02-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:41
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/14; F16K11/16; F16K11/163; F16K11/166; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6116; Y10T137/7504; Y10T137/7668; Y10T137/8593; Y10T137/87048; Y10T137/87056; Y10T137/87064; Y10T137/87072; Y10T137/8708; Y10T137/87096; Y10T137/87121; Y10T137/87129; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1093117A
Cited
US1082329A
Cited
US1092421A
Cited
US1690767A
Cited
US2301439A
Cited
US2238916A
Cited
US2405940A
Cited
US2575940A
Cited
US2494633A
Cited
US2679865A
Cited
US2756773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |