US2501326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ammonia distillation system
Assignee: FRIGID TRANSP Co Inc
•
Filing: 1945-07-19
•
Granted: 1950-03-21
•
Expires: 1965-07-19
Abstract
No abstract record available.
Inventors
- 👤 Forrest E Gilmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:03
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/02; C01C1/10; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/905; Y10S62/931; Y10S62/934
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB132504A
Cited
US1702495A
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US671810A
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US1012272A
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US1872829A
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US2012621A
Cited
US2080167A
Cited
GB455947A
Cited
US2108914A
Cited
US2151935A
Cited
US2180231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |