US2472694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid pressure operated controlling system
Assignee: Whitnash PLC
•
Filing: 1944-04-13
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Granted: 1949-06-07
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Expires: 1964-04-13
Abstract
No abstract record available.
Inventors
- 👤 Chouings Leslie Cyril
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:08
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B11/04; F16; F16H; F16H61/00; F16H61/04; F16H61/06; F16H61/065; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20538; F15B2211/21; F15B2211/212; F15B2211/30; F15B2211/305; F15B2211/30525; F15B2211/32; F15B2211/327; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/455; F15B2211/60; F15B2211/625; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7052; F15B2211/75; F15B2211/77; F15B2211/7716; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |