US2617484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of gaseous mixtures
Assignee: Individual
•
Filing: 1949-11-14
•
Granted: 1952-11-11
•
Expires: 1969-11-14
Abstract
No abstract record available.
Inventors
- 👤 Judson S Swearingen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:48
CPC Classifications
C; C10; C10G; C10G5/00; C10G5/06; E; E21; E21B; E21B43/00; E21B43/16; E21B43/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1015777A
Cited
US1809409A
Cited
US2104327A
Cited
US2215497A
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US2151248A
Cited
US2355167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |