US2564023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocable check valve
Assignee: Individual
•
Filing: 1947-04-14
•
Granted: 1951-08-14
•
Expires: 1967-04-14
Abstract
No abstract record available.
Inventors
- 👤 Jacob H Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:51
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/021; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US141309A
Cited
US701607A
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US758377A
Cited
US1287618A
Cited
US1796252A
Cited
US1805391A
Cited
US1912786A
Cited
US2128128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |