Patent US1521385A successfully refreshed from Google Patents.
US1521385A
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Device for the production of compressed oxygen from liquid oxygen
Assignee: Individual
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Filing: 1921-08-29
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Granted: 1924-12-30
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Expires: 1941-08-29
Abstract
No abstract record available.
Inventors
- 👤 Messer Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:44
CPC Classifications
F; F17; F17C; F17C9/00; F17C9/02; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/0119; F17C2203/00; F17C2203/06; F17C2203/0634; F17C2203/0636; F17C2203/0639; F17C2221/00; F17C2221/01; F17C2221/011; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2225/00; F17C2225/01; F17C2225/0107; F17C2225/0123; F17C2227/00; F17C2227/01; F17C2227/0128; F17C2227/0135; F17C2227/0157; F17C2227/03; F17C2227/0302; F17C2227/0304; F17C2227/0309; F17C2227/0311; F17C2227/0367; F17C2227/0388; F17C2227/039; F17C2227/0393; F17C2227/04
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) | 1927-12-30 | 1928-06-30 | 1928-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-12-30 | 1932-06-30 | 1932-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-12-30 | 1936-06-30 | 1936-12-30 | $7700.00 | Window Closed / Lapsed |