US2752945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid control device
Assignee: Cardox Corp
•
Filing: 1951-02-05
•
Granted: 1956-07-03
•
Expires: 1971-02-05
Abstract
No abstract record available.
Inventors
- 👤 Clifford R Patterson
- 👤 Bourguignon Francois E De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:09
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/087; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86839; Y10T137/86847; Y10T137/86855
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US627671A
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US957347A
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US1299586A
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US1698961A
Cited
US2020286A
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US2320011A
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US2350662A
Cited
US2478702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |