US2685180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasifying an extraneous liquefied gas and simultaneously liquefying another gas
Assignee: Airco Inc
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Filing: 1952-04-30
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Granted: 1954-08-03
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Expires: 1972-04-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:16
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/02; F25J1/0002; F25J1/0012; F25J1/0221; F25J1/0224; F25J1/0228; F25J1/0235; F25J1/0237; F25J3/00; F25J3/08; F25J2200/00; F25J2200/02; F25J2200/72; F25J2205/00; F25J2205/30; F25J2210/00; F25J2210/50; F25J2215/00; F25J2215/40; F25J2220/00; F25J2220/40; F25J2270/00; F25J2270/90; F25J2270/904
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) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |