US2107797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing and storing oxygen
Assignee: Individual
•
Filing: 1936-10-17
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Granted: 1938-02-08
•
Expires: 1956-10-17
Abstract
No abstract record available.
Inventors
- 👤 Messer Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:09
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/044; F17; F17C; F17C9/00; F17C9/02; F25J3/04763; F25J3/04769; F25J3/04781; F25J2200/00; F25J2200/50; F25J2215/00; F25J2215/50; F25J2235/00; F25J2235/04; F25J2250/00; F25J2250/20; F25J2290/00; F25J2290/62
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) | 1941-02-07 | 1941-08-09 | 1942-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-02-07 | 1945-08-09 | 1946-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-02-07 | 1949-08-09 | 1950-02-08 | $7700.00 | Window Closed / Lapsed |