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US796635A
Expired / Lapsed
US
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Automatic change-valve and choker for operating hydraulic presses.
Assignee: Individual
•
Filing: 1904-04-07
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Granted: 1905-08-08
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Expires: 1924-04-07
Abstract
No abstract record available.
Inventors
- 👤 Alfred W French
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:00
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7847; Y10T137/7848
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) | 1908-08-07 | 1909-02-06 | 1909-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-08-07 | 1913-02-06 | 1913-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-08-07 | 1917-02-06 | 1917-08-08 | $7700.00 | Window Closed / Lapsed |