Patent US2551890A successfully refreshed from Google Patents.
US2551890A
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US
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Gas scrubber
Assignee: PACKAGED GAS EQUIPMENT Corp
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Filing: 1950-08-18
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Granted: 1951-05-08
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Expires: 1970-08-18
Abstract
No abstract record available.
Inventors
- 👤 Fred G Love
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:10
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/34; B; B01; B01D; B01D47/00; B01D47/02; B01D47/021; B01D47/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |