US2642261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vent valve
Assignee: Curtis Automotive Devices Inc
•
Filing: 1947-06-06
•
Granted: 1953-06-16
•
Expires: 1967-06-06
Abstract
No abstract record available.
Inventors
- 👤 Richard L Gates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:02
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/04; F24; F24D; F24D19/00; F24D19/08; F24D19/082; F24D19/083; F24D19/085; F24D19/086; Y; Y10; Y10T; Y10T137/00; Y10T137/794; Y10T137/8122
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1551429A
Cited
US1682151A
Cited
US656849A
Cited
US862009A
Cited
US1238926A
Cited
US1302829A
Cited
US1333506A
Cited
US1378426A
Cited
US1403509A
Cited
US1462263A
Cited
US1503656A
Cited
US2336924A
Cited
US2408541A
Cited
US2401129A
Cited
US2577654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |