Patent LU41801A1 successfully refreshed from Google Patents.
US756291A
Expired / Lapsed
US
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Automatic flushing-valve.
Assignee: Individual
•
Filing: 1903-08-31
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Granted: 1904-04-05
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Expires: 1923-08-31
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Schossow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:40
CPC Classifications
F; F16; F16K; F16K21/00; F16K21/04; F16K21/06; F16K21/10; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7921
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) | 1907-04-05 | 1907-10-05 | 1908-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-04-05 | 1911-10-05 | 1912-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-04-05 | 1915-10-05 | 1916-04-05 | $7700.00 | Window Closed / Lapsed |