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US1417690A
Expired / Lapsed
US
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Automatic plate valve
Assignee: Worthington Pump and Machinery Corp
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Filing: 1920-04-13
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Granted: 1922-05-30
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Expires: 1940-04-13
Abstract
No abstract record available.
Inventors
- 👤 Riesner Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:37
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/16; F16K15/144; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7887
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) | 1925-05-29 | 1925-11-28 | 1926-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-05-29 | 1929-11-28 | 1930-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-05-29 | 1933-11-28 | 1934-05-30 | $7700.00 | Window Closed / Lapsed |