Patent US419440A successfully refreshed from Google Patents.
US419440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-regulatjng valve and governor
Assignee: —
•
Filing: —
•
Granted: 1890-01-14
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Expires: 1907-01-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:29
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0655; G05D16/0661; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823
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) | 1893-01-13 | 1893-07-15 | 1894-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1897-01-13 | 1897-07-15 | 1898-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1901-01-14 | 1901-07-16 | 1902-01-15 | $7700.00 | Window Closed / Lapsed |