US3555783A
Expired / Lapsed
US
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Process and apparatus for treating liquids and gases
Assignee: ENVIRONMENTAL SERVICE Inc
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Filing: 1969-11-20
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Granted: 1971-01-19
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Expires: 1989-11-20
Abstract
Abstract A PROCESS AND APPARATUS FOR TREATING LIQUID AND SEPARATING ASES WHICH UTILIZES THE PRINCIPLE OF DIFFERENT GASES.
Inventors
- 👤 Derald E Grimshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:54
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1278; C02F3/1289; B; B01; B01D; B01D47/00; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |