US2378613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel tank flapper valve
Assignee: Arrowhead Rubber Co
•
Filing: 1941-12-01
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Granted: 1945-06-19
•
Expires: 1961-12-01
Abstract
No abstract record available.
Inventors
- 👤 John W Young
- 👤 Charles E Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:32
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/144; F16K15/16; F16K2200/00; F16K2200/30; F16K2200/305; F16K2200/3052; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/7891
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) | 1948-06-18 | 1948-12-18 | 1949-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-06-18 | 1952-12-18 | 1953-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-06-18 | 1956-12-18 | 1957-06-19 | $7700.00 | Window Closed / Lapsed |