Patent US1483390A successfully refreshed from Google Patents.
US1483390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve mechanism
Assignee: T W SNOW CONSTRUCTION CO
•
Filing: 1920-10-11
•
Granted: 1924-02-12
•
Expires: 1940-10-11
Abstract
No abstract record available.
Inventors
- 👤 Barton S Snow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:53
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87096; Y10T137/87169; Y10T137/87233; Y10T137/87241; Y10T137/87917; Y10T137/87981; Y10T137/88046; Y10T137/8807
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1927-02-11 | 1927-08-13 | 1928-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-02-11 | 1931-08-13 | 1932-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-02-11 | 1935-08-13 | 1936-02-12 | $7700.00 | Window Closed / Lapsed |