US1960831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve control system
Assignee: Shand and Jurs Co
•
Filing: 1929-04-17
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Granted: 1934-05-29
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Expires: 1949-04-17
Abstract
No abstract record available.
Inventors
- 👤 Reginald C Shand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:47
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K27/00; F16K27/07; F16K31/12; F16K31/122; F16K31/1221; Y; Y10; Y10S; Y10S137/00; Y10S137/905; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/4456; Y10T137/6851; Y10T137/6855; Y10T137/6881; Y10T137/794; Y10T137/8593; Y10T137/86292; Y10T137/86324; Y10T137/86493; Y10T137/87048
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) | 1937-05-28 | 1937-11-27 | 1938-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-05-28 | 1941-11-27 | 1942-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-05-28 | 1945-11-27 | 1946-05-29 | $7700.00 | Window Closed / Lapsed |