Patent US2425571A successfully refreshed from Google Patents.
Patent US913232A successfully refreshed from Google Patents.
Patent AT5044B successfully refreshed from Google Patents.
Patent US874902A successfully refreshed from Google Patents.
Patent US851981A successfully refreshed from Google Patents.
US851981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-reducing valve.
Assignee: Individual
•
Filing: 1906-08-06
•
Granted: 1907-04-30
•
Expires: 1926-08-06
Abstract
No abstract record available.
Inventors
- 👤 Jacob Cloos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:09
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/10; F16K17/105; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7767; Y10T137/7781; Y10T137/7832; Y10T137/8593; Y10T137/87917; Y10T137/88054; Y10T137/88062
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1910-04-29 | 1910-10-29 | 1911-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-04-29 | 1914-10-29 | 1915-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-04-29 | 1918-10-29 | 1919-04-30 | $7700.00 | Window Closed / Lapsed |