US899462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-valve for hydraulic jacks.
Assignee: RICHARD DUDGEON
•
Filing: 1907-05-23
•
Granted: 1908-09-22
•
Expires: 1927-05-23
Abstract
No abstract record available.
Inventors
- 👤 James W Nelson
- 👤 William H Mathers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:22
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/035; B60K15/03519; Y; Y10; Y10T; Y10T137/00; Y10T137/0753; Y10T137/0874; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791
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) | 1911-09-22 | 1912-03-23 | 1912-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-09-22 | 1916-03-23 | 1916-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-09-22 | 1920-03-23 | 1920-09-22 | $7700.00 | Window Closed / Lapsed |