Patent US4108000A successfully refreshed from Google Patents.
Patent US3499827A successfully refreshed from Google Patents.
US3499827A
Expired / Lapsed
US
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Distillation plant
Assignee: United States Department of the Interior
•
Filing: 1967-04-12
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Granted: 1970-03-10
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Expires: 1987-04-12
Abstract
No abstract record available.
Inventors
- 👤 Robert Bruce Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:24
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/26; C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/08; Y; Y02; Y02A; Y02A20/00; Y02A20/124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1021486A
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US1200996A
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US2894879A
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US3165452A
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US3161574A
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US3245883A
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US3248304A
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US3305455A
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US3303106A
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US3351120A
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US3312600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |