Patent US3448754A successfully refreshed from Google Patents.
US3448754A
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US
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Self-proportioning flow system
Assignee: Sinclair Research Inc
•
Filing: 1966-10-13
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Granted: 1969-06-10
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Expires: 1986-10-13
Abstract
No abstract record available.
Inventors
- 👤 Reece J Crabtree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:04
CPC Classifications
G; G05; G05D; G05D11/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516; Y10T137/2519; Y10T137/2559
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2218393A
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US2795235A
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US2949123A
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US3054417A
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US2940460A
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US3038486A
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US3074277A
Cited
US2967538A
Cited
US3216434A
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US3119412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |