Patent US2869674A successfully refreshed from Google Patents.
US2869674A
Expired / Lapsed
US
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Liquid and gas separator
Assignee: Akzo Nobel UK PLC
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Filing: 1955-05-13
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Granted: 1959-01-20
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Expires: 1975-05-13
Abstract
No abstract record available.
Inventors
- 👤 Charles D Vandenburgh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:39
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0042; B01D19/0052; B01D19/0057; D; D01; D01F; D01F13/00; D01F13/02; Y; Y02; Y02P; Y02P70/00; Y02P70/50; Y02P70/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1216747A
Cited
US2204062A
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US2355057A
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GB638198A
Cited
US2677433A
Cited
US2689018A
Cited
US2684728A
Cited
US2738852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |