US2295111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of tubular valve members
Assignee: S Smith and Sons Ltd
•
Filing: 1941-07-10
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Granted: 1942-09-08
•
Expires: 1961-07-10
Abstract
No abstract record available.
Inventors
- 👤 Hemmings John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:42
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/04; F16K27/041; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49414; Y10T29/49416; Y10T29/49419
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) | 1945-09-07 | 1946-03-09 | 1946-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-09-07 | 1950-03-09 | 1950-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-09-07 | 1954-03-09 | 1954-09-08 | $7700.00 | Window Closed / Lapsed |