US2359802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow plunger control valve
Assignee: HYDRAULIC CONTROL ENGINEERING
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Filing: 1943-08-21
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Granted: 1944-10-10
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Expires: 1963-08-21
Abstract
No abstract record available.
Inventors
- 👤 William T Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:12
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/86702; Y10T137/87169; Y10T137/87177; Y10T137/87185; 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) | 1947-10-10 | 1948-04-10 | 1948-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-10-10 | 1952-04-10 | 1952-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-10-10 | 1956-04-10 | 1956-10-10 | $7700.00 | Window Closed / Lapsed |