Patent US2591878A successfully refreshed from Google Patents.
US2591878A
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US
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Oxygen regenerator
Assignee: Motors Liquidation Co
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Filing: 1948-09-22
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Granted: 1952-04-08
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Expires: 1968-09-22
Abstract
No abstract record available.
Inventors
- 👤 Philip S Rogers
- 👤 Willard O Emmons
- 👤 John W Godfrey
- 👤 Kelso James Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:25
CPC Classifications
F; F25; F25J; F25J5/00; F25J5/002; F25J2205/00; F25J2205/24; F25J2290/00; F25J2290/32; F25J2290/42; F28; F28D; F28D9/00; F28D9/0093
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |