US2609099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid separation apparatus
Assignee: Individual
•
Filing: 1944-12-09
•
Granted: 1952-09-02
•
Expires: 1964-12-09
Abstract
No abstract record available.
Inventors
- 👤 Donald G Griswold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:26
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; B01D17/04; B01D17/045; Y; Y10; Y10S; Y10S210/00; Y10S210/05; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1698002A
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US1948543A
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US2193720A
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US2204998A
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US2352629A
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US2352628A
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US2348757A
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US2328008A
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US2363009A
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US2452615A
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US2412841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |