US2419443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure control system
Assignee: —
•
Filing: —
•
Granted: 1947-04-22
•
Expires: 1964-04-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:52
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/16; B; B64; B64C; B64C13/00; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/3056; F15B2211/30585; F15B2211/32; F15B2211/321; F15B2211/324; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/45; F15B2211/70; F15B2211/71; F15B2211/7114; F15B2211/7128; F15B2211/72; F15B2211/78; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169; Y10T137/87233; Y10T137/87241
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) | 1950-04-21 | 1950-10-21 | 1951-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-21 | 1954-10-21 | 1955-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-21 | 1958-10-21 | 1959-04-22 | $7700.00 | Window Closed / Lapsed |