US2550148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple position spool valve for machine tools
Assignee: LE MAIRE TOOL AND Manufacturing CO
•
Filing: 1944-10-06
•
Granted: 1951-04-24
•
Expires: 1964-10-06
Abstract
No abstract record available.
Inventors
- 👤 Lloyd V Harding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:50
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/021; F15B13/04; F15B13/0401; F15B2013/0413; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86879; Y10T137/87169; Y10T137/87177; Y10T137/87185; Y10T408/00; Y10T408/65; Y10T408/675; Y10T408/6757; Y10T82/00; Y10T82/25; Y10T82/2531; Y10T82/2533
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) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |