Patent US1379173A successfully refreshed from Google Patents.
US1379173A
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Pump-valve
Assignee: Worthington Pump and Machinery Corp
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Filing: 1918-04-03
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Granted: 1921-05-24
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Expires: 1938-04-03
Abstract
No abstract record available.
Inventors
- 👤 David A Decrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:43
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/08; Y; Y10; Y10S; Y10S137/00; Y10S137/906; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7859; Y10T137/7861; Y10T137/7862; Y10T137/7863; Y10T137/7864; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7935
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) | 1924-05-23 | 1924-11-22 | 1925-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-05-23 | 1928-11-22 | 1929-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-05-23 | 1932-11-22 | 1933-05-24 | $7700.00 | Window Closed / Lapsed |