US2925827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swing check valve
Assignee: Crane Co
•
Filing: 1955-10-14
•
Granted: 1960-02-23
•
Expires: 1975-10-14
Abstract
No abstract record available.
Inventors
- 👤 Andrew E Anderson
- 👤 Ernest W Geipel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:25
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189901077A
Cited
US1169718A
Cited
DE511690C
Cited
GB329576A
Cited
US2048943A
Cited
US2265595A
Cited
US2312290A
Cited
US2349145A
Cited
US2557331A
Cited
US2717001A
Cited
US2744489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |