Patent US2850880A successfully refreshed from Google Patents.
US2850880A
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Process and an apparatus for the separation of compressed air
Assignee: Linde GmbH
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Filing: 1956-01-04
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Granted: 1958-09-09
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Expires: 1976-01-04
Abstract
No abstract record available.
Inventors
- 👤 Jakob Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:35
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/04151; F25J3/04187; F25J3/04193; F25J3/04206; F25J3/04248; F25J3/04284; F25J3/04406; F25J3/04424; F25J2205/00; F25J2205/24; F25J2250/00; F25J2250/30; F25J2250/40; F25J2250/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2209748A
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US2527301A
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US2411680A
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US2650482A
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US2537046A
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US2655796A
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US2664719A
Cited
FR1072169A
Cited
US2753698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |