US2502282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of the constituents of air
Assignee: Airco Inc
•
Filing: 1948-01-07
•
Granted: 1950-03-28
•
Expires: 1968-01-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Schlitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:41
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/08; F25J2210/00; F25J2210/40; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1395466A
Cited
US1864585A
Cited
US2423273A
Cited
US2411680A
Cited
US2433508A
Cited
US2413752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |