US2630920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination strainer and check valve
Assignee: Individual
•
Filing: 1949-07-25
•
Granted: 1953-03-10
•
Expires: 1969-07-25
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:36
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/1402; B; B01; B01D; B01D35/00; B01D35/14; B01D35/153; F16K15/148; F16L; F16L55/00; F16L55/24; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7859; Y10T137/7879; Y10T137/7888; Y10T137/789; Y10T137/794; Y10T137/8085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |