Patent US2416875A successfully refreshed from Google Patents.
US2416875A
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US
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System for controlling flow of fluids
Assignee: Individual
•
Filing: 1943-03-16
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Granted: 1947-03-04
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Expires: 1963-03-16
Abstract
No abstract record available.
Inventors
- 👤 William R Kehoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:19
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/1919; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2511; Y10T137/7287; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7769
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-03 | 1950-09-02 | 1951-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-03 | 1954-09-02 | 1955-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-03 | 1958-09-02 | 1959-03-04 | $7700.00 | Window Closed / Lapsed |