US869755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic four-way valve and by-pass.
Assignee: FREDERICK A RIEHLE
•
Filing: 1907-02-12
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Granted: 1907-10-29
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Expires: 1927-02-12
Abstract
No abstract record available.
Inventors
- 👤 William J Tretch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:41
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/006; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/87322; Y10T137/877; Y10T137/87829; Y10T137/87837; Y10T137/87853; Y10T137/87877
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) | 1910-10-28 | 1911-04-29 | 1911-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-10-28 | 1915-04-29 | 1915-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-10-28 | 1919-04-29 | 1919-10-29 | $7700.00 | Window Closed / Lapsed |