Patent US2957495A successfully refreshed from Google Patents.
US2957495A
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US
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Fluid mixing device
Assignee: Individual
•
Filing: 1958-06-19
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Granted: 1960-10-25
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Expires: 1978-06-19
Abstract
No abstract record available.
Inventors
- 👤 Clifford L Ashbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:09
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/688; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8326; Y10T137/8359; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87619; Y10T137/87627; Y10T137/87635
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1138202A
Cited
US1036871A
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US1517598A
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US2235998A
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FR893350A
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US2465628A
Cited
US2523800A
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US2778223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |