US2408056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonreturn valve
Assignee: Alan Muntz and Co Ltd
•
Filing: 1942-08-11
•
Granted: 1946-09-24
•
Expires: 1962-08-11
Abstract
No abstract record available.
Inventors
- 👤 Farmer Harold Oatridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:13
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/16; F16K15/1401; F04; F04B; F04B39/00; F04B39/10; F04B39/1093; F16K15/1402; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-09-23 | 1950-03-25 | 1950-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-09-23 | 1954-03-25 | 1954-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-09-23 | 1958-03-25 | 1958-09-24 | $7700.00 | Window Closed / Lapsed |