US2645451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve structure
Assignee: Individual
•
Filing: 1947-08-11
•
Granted: 1953-07-14
•
Expires: 1967-08-11
Abstract
No abstract record available.
Inventors
- 👤 John N Gladden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:49
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/12; F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/044; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86686; Y10T137/86879; Y10T137/86895
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US717292A
Cited
US1567711A
Cited
US1602118A
Cited
US1718530A
Cited
US1720197A
Cited
US1937246A
Cited
US1972821A
Cited
US2071890A
Cited
US2071391A
Cited
US2089279A
Cited
US2417494A
Cited
US2397117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |