Patent US3116348A successfully refreshed from Google Patents.
US3116348A
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US
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Gas treating device
Assignee: Research Cottrell Inc
•
Filing: 1960-07-27
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Granted: 1963-12-31
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Expires: 1980-07-27
Abstract
No abstract record available.
Inventors
- 👤 Alan B Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:31
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/30; B01F25/31; B01F25/313; Y; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2899185A
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GB245468A
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US1644338A
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US1701600A
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US2060166A
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US2032404A
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US2088691A
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US2591134A
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US2621754A
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US2661195A
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US2964304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |