US2467413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid oxygen pumping system
Assignee: Individual
•
Filing: 1946-02-15
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Granted: 1949-04-19
•
Expires: 1966-02-15
Abstract
No abstract record available.
Inventors
- 👤 William A Wildhack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:46
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F04B43/10; F04B43/113; F01; F01L; F01L23/00; F04B9/00; F04B9/08; F04B9/12; F04B9/123; F04B9/127; F17; F17C; F17C9/00; F17C2205/00; F17C2205/01; F17C2205/0153; F17C2205/0176; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2205/0329; F17C2205/0332; F17C2205/0335; F17C2221/00; F17C2221/01; F17C2221/011; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/03; F17C2223/033; F17C2223/04; F17C2223/042; F17C2223/046; F17C2223/047; F17C2225/00; F17C2225/01; F17C2225/0107; F17C2225/0123; F17C2225/04; F17C2225/042; F17C2225/046; F17C2225/047; F17C2227/00; F17C2227/01; F17C2227/0128; F17C2227/0135; F17C2227/03; F17C2227/0302; F17C2227/0309; F17C2227/0311; F17C2227/0367; F17C2227/0388; F17C2227/0393; F17C2265/00; F17C2265/03; F17C2265/031; F17C2265/032; F17C2265/033; F17C2265/034; F17C2270/00; F17C2270/01; F17C2270/0186; F17C2270/0189; F17C2270/0197; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/313
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) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |