US2630294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricated valve with lubricant vent
Assignee: ACF Industries Inc
•
Filing: 1946-04-27
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Granted: 1953-03-03
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Expires: 1966-04-27
Abstract
No abstract record available.
Inventors
- 👤 George R Ericson
- 👤 Robert A Shields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:47
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/22; F16K5/225; F16K2200/00; F16K2200/20; F16K2200/204; F16K2200/30; F16K2200/301; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4393; Y10T137/44; Y10T137/4407; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7846
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |