Patent US2409561A successfully refreshed from Google Patents.
US2409561A
Expired / Lapsed
US
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Automatic control valve for jet pumps
Assignee: Individual
•
Filing: 1945-02-19
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Granted: 1946-10-15
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Expires: 1965-02-19
Abstract
No abstract record available.
Inventors
- 👤 Thaddeus S Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:37
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/48; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2577; Y10T137/7722; Y10T137/7781; Y10T137/7832; Y10T137/8593; Y10T137/86928
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-10-14 | 1950-04-15 | 1950-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-10-14 | 1954-04-15 | 1954-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-10-14 | 1958-04-15 | 1958-10-15 | $7700.00 | Window Closed / Lapsed |