US843033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-pressure regulator.
Assignee: Individual
•
Filing: 1904-04-07
•
Granted: 1907-02-05
•
Expires: 1924-04-07
Abstract
No abstract record available.
Inventors
- 👤 Walter J Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:25
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/02; H02P1/027; B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/28
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) | 1910-02-04 | 1910-08-06 | 1911-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-02-04 | 1914-08-06 | 1915-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-02-04 | 1918-08-06 | 1919-02-05 | $7700.00 | Window Closed / Lapsed |