Patent US6615165B2 successfully refreshed from Google Patents.
US2146709A
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Pump for viscolizer valves
Assignee: UNION STEAM PUMP Co
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Filing: 1935-07-10
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Granted: 1939-02-14
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Expires: 1955-07-10
Abstract
No abstract record available.
Inventors
- 👤 John C Bird
- 👤 Karl D Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:17
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/16; F04B53/162; F04B53/164; F04B1/00; F04B53/10; F04B53/102; F04B53/1035; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915; Y10T137/792
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) | 1942-02-13 | 1942-08-15 | 1943-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-13 | 1946-08-15 | 1947-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-13 | 1950-08-15 | 1951-02-14 | $7700.00 | Window Closed / Lapsed |