US961220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve mechanism.
Assignee: Individual
•
Filing: 1909-04-08
•
Granted: 1910-06-14
•
Expires: 1929-04-08
Abstract
No abstract record available.
Inventors
- 👤 George F D Trask
- 👤 Charles W Everson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:29
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/044; Y; Y10; Y10S; Y10S137/00; Y10S137/903; Y10S251/00; Y10S251/903; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86686; Y10T137/877; Y10T137/87829; Y10T137/87837; Y10T137/87853; Y10T137/87917; Y10T137/88046
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) | 1913-06-13 | 1913-12-13 | 1914-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-06-13 | 1917-12-13 | 1918-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-06-13 | 1921-12-13 | 1922-06-14 | $7700.00 | Window Closed / Lapsed |