Patent US1497546A successfully refreshed from Google Patents.
US1497546A
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Treatment of natural gases
Assignee: Air Liquide SA
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Filing: 1921-08-10
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Granted: 1924-06-10
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Expires: 1941-08-10
Abstract
No abstract record available.
Inventors
- 👤 Claude Georges
- 👤 Jordan Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:52
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/06; F25J3/0605; F25J3/061; F25J3/063; F25J3/0635; F25J3/064; F25J3/066; F25J3/0685; F25J3/069; F25J2200/00; F25J2200/80; F25J2210/00; F25J2210/06; F25J2240/00; F25J2240/02
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) | 1927-06-10 | 1927-12-10 | 1928-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-06-10 | 1931-12-10 | 1932-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-06-10 | 1935-12-10 | 1936-06-10 | $7700.00 | Window Closed / Lapsed |