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US1074094A
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US
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Apparatus for liquefying gaseous mixtures.
Assignee: Individual
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Filing: 1911-07-31
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Granted: 1913-09-23
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Expires: 1931-07-31
Abstract
No abstract record available.
Inventors
- 👤 Hermann Blau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:07
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/06; F25J3/0605; F25J3/062; F25J3/02; F25J3/0204; F25J3/0219; F25J3/0228; F25J3/0233; F25J3/0238; F25J3/0252; F25J3/063; F25J3/0635; F25J3/064; F25J3/0655; F25J2200/00; F25J2200/02; F25J2200/74; F25J2205/00; F25J2205/02; F25J2205/04
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) | 1916-09-22 | 1917-03-24 | 1917-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-09-22 | 1921-03-24 | 1921-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-09-22 | 1925-03-24 | 1925-09-23 | $7700.00 | Window Closed / Lapsed |