US2541569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquefying and regasifying natural gases
Assignee: Individual
•
Filing: 1945-04-02
•
Granted: 1951-02-13
•
Expires: 1965-04-02
Abstract
No abstract record available.
Inventors
- 👤 Paul L Born
- 👤 Daniel V Meiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:29
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/003; F25J1/0032; F25J1/0045; F25J1/0002; F25J1/0022; F25J1/004; F25J1/0047; F25J1/0052; F25J1/006; F25J1/008; F25J1/0082; F25J1/02; F25J1/0201; F25J1/0202; F25J1/0203; F25J1/0204; F25J1/0208; F25J1/0243; F25J1/0244; F25J1/0245; F25J1/0249; F25J1/025; F25J1/0257; F25J1/0262; F25J1/0264; F25J1/0265; F25J1/0267; F25J1/0268; F25J2210/00; F25J2210/06; F25J2220/00; F25J2220/60; F25J2220/62; F25J2220/64; F25J2235/00; F25J2235/60; F25J2245/00; F25J2245/90; F25J2270/00; F25J2270/12; F25J2270/60; F25J2270/90; F25J2290/00; F25J2290/34; F25J2290/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |