US3054419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas separation
Assignee: Rockwell Manufacturing Co
•
Filing: 1956-03-30
•
Granted: 1962-09-18
•
Expires: 1976-03-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Farrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:12
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/04; F16K24/042; F16K24/048; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099; Y10T137/7287; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/7378
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1119980A
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US1894267A
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FR694646A
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US1892565A
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US2205033A
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US2554158A
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US2443860A
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US2694544A
Cited
US2745511A
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US2804087A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |