US2165994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine for low temperature gas separation
Assignee: Linde GmbH
•
Filing: 1936-03-18
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Granted: 1939-07-11
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Expires: 1956-03-18
Abstract
No abstract record available.
Inventors
- 👤 Zerkowitz Guido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:06
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/04763; F25B; F25B9/00; F25B9/06; F25J3/04866; F25B2400/00; F25B2400/14; F25B2400/141; F25J2240/00; F25J2240/02; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/91
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) | 1942-07-10 | 1943-01-09 | 1943-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-07-10 | 1947-01-09 | 1947-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-07-10 | 1951-01-09 | 1951-07-11 | $7700.00 | Window Closed / Lapsed |