US2471941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve and liner therefor
Assignee: AERO SUPPLY Manufacturing CO Inc
•
Filing: 1944-05-29
•
Granted: 1949-05-31
•
Expires: 1964-05-29
Abstract
No abstract record available.
Inventors
- 👤 George T Downey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:16
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/18; F16K5/188; F16K11/00; F16K11/02; F16K11/08; F16K11/085; F16K5/04; F16K5/0457; F16K5/0464; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7036; Y10T137/8593; Y10T137/86493; Y10T137/86863; Y10T137/86871
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE12002C
Cited
US690232A
Cited
US760546A
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US1166350A
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AU1697834A
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US2138530A
Cited
US2161070A
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GB516614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |