Patent US2089609A successfully refreshed from Google Patents.
US2089609A
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Carbon dioxide liquefier
Assignee: Individual
•
Filing: 1934-10-29
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Granted: 1937-08-10
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Expires: 1954-10-29
Abstract
No abstract record available.
Inventors
- 👤 Harry S Houghton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:39
CPC Classifications
F; F17; F17C; F17C7/00; F17C7/02; F17C7/04; C; C01; C01B; C01B32/00; C01B32/50; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/03; F17C2201/032; F17C2205/00; F17C2205/01; F17C2205/0123; F17C2205/013; F17C2205/0134; F17C2205/0146; F17C2205/0153; F17C2205/018; F17C2205/0192; F17C2205/03; F17C2205/0302; F17C2205/0311; F17C2205/0323; F17C2205/0329; F17C2205/0338; F17C2221/00; F17C2221/01; F17C2221/013; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0176; F17C2223/03; F17C2223/031; F17C2225/00; F17C2225/01; F17C2225/0107; F17C2225/0123; F17C2225/03; F17C2225/033; F17C2250/00; F17C2250/04; F17C2250/0404; F17C2250/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-08-09 | 1941-02-08 | 1941-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-08-09 | 1945-02-08 | 1945-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-08-09 | 1949-02-08 | 1949-08-10 | $7700.00 | Window Closed / Lapsed |