US2576984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-pressure liquid oxygen converter
Assignee: Individual
•
Filing: 1946-08-09
•
Granted: 1951-12-04
•
Expires: 1966-08-09
Abstract
No abstract record available.
Inventors
- 👤 William A Wildhack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:21
CPC Classifications
F; F17; F17C; F17C9/00; F17C9/02; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2203/00; F17C2203/03; F17C2203/0304; F17C2203/0325; F17C2203/0354; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2205/0329; F17C2205/0332; F17C2221/00; F17C2221/01; F17C2221/011; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2225/00; F17C2225/01; F17C2225/0107; F17C2225/0123; F17C2225/03; F17C2225/036; F17C2227/00; F17C2227/03; F17C2227/0302; F17C2227/0304; F17C2227/0332; F17C2227/0367; F17C2227/0369; F17C2227/0376; F17C2227/0383; F17C2227/0386; F17C2227/0388; F17C2227/0393; F17C2250/00; F17C2250/04; F17C2250/0404; F17C2250/043; F17C2250/06; F17C2250/0605; F17C2250/0636; F17C2270/00; F17C2270/01; F17C2270/0186; F17C2270/0189; F17C2270/0197; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/313; Y10T137/6416; Y10T137/6525
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1866514A
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US2180090A
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US2226810A
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US2368680A
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US2464835A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-03 | 1955-06-04 | 1955-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-03 | 1959-06-04 | 1959-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-03 | 1963-06-04 | 1963-12-04 | $7700.00 | Window Closed / Lapsed |