Patent US1293858A successfully refreshed from Google Patents.
US1293858A
Expired / Lapsed
US
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Hydraulic valve.
Assignee: DAVY BROTHERS Ltd
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Filing: 1918-08-02
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Granted: 1919-02-11
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Expires: 1938-08-02
Abstract
No abstract record available.
Inventors
- 👤 Charles Alfred Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:08
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22; F16K3/24; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919
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) | 1922-02-10 | 1922-08-12 | 1923-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-02-10 | 1926-08-12 | 1927-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-02-10 | 1930-08-12 | 1931-02-11 | $7700.00 | Window Closed / Lapsed |