US2769403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve assembly for hopper-type vehicles
Assignee: Brogdex Co
•
Filing: 1952-11-03
•
Granted: 1956-11-06
•
Expires: 1972-11-03
Abstract
No abstract record available.
Inventors
- 👤 Joe L Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:31
CPC Classifications
B; B61; B61D; B61D7/00; B61D7/14; B61D7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US800410A
Cited
US966530A
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US1066728A
Cited
US1028116A
Cited
US1284111A
Cited
US2127810A
Cited
US2616758A
Cited
US2686693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |