US2825359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid flow control apparatus
Assignee: Cochrane Corp
•
Filing: 1952-12-18
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Granted: 1958-03-04
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Expires: 1972-12-18
Abstract
No abstract record available.
Inventors
- 👤 John G Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:43
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/072; B; B01; B01D; B01D41/00; B01D41/02; B01J; B01J49/00; B01J49/80; B01J49/85; C; C02; C02F; C02F1/00; C02F1/42; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/8593; Y10T137/86493; Y10T137/86831; Y10T137/86863; Y10T137/877; Y10T137/87893
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB364245A
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US1508398A
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US1724891A
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US1722603A
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US2158068A
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US2221482A
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US2249576A
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US2309032A
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US2352629A
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US2292963A
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US2370283A
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US2428410A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |