Patent US3448562A successfully refreshed from Google Patents.
US3448562A
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US
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Gas treating apparatus and method
Assignee: Wallace Murray Corp
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Filing: 1967-07-25
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Granted: 1969-06-10
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Expires: 1987-07-25
Abstract
No abstract record available.
Inventors
- 👤 Walter L Wisting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:55
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/10; Y; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2127571A
Cited
US2200891A
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US2484277A
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US2575359A
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US2935375A
Cited
US3142548A
Cited
US3284435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |