US1354056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of separating mixed gases
Assignee: JEFFERIES NORTON CORP
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Filing: 1915-08-31
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Granted: 1920-09-28
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Expires: 1935-08-31
Abstract
No abstract record available.
Inventors
- 👤 Fred E Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:14
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J2210/00; F25J2210/18; F25J2210/40
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) | 1923-09-28 | 1924-03-29 | 1924-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-09-28 | 1928-03-29 | 1928-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-09-28 | 1932-03-29 | 1932-09-28 | $7700.00 | Window Closed / Lapsed |