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Patent US2641192A successfully refreshed from Google Patents.
US2641192A
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Gear pump
Assignee: LINDBERG TRUST
•
Filing: 1950-05-03
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Granted: 1953-06-09
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Expires: 1970-05-03
Abstract
No abstract record available.
Inventors
- 👤 Paul G Lindberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:34
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/12; F04C2/14; F04C15/00; F04C2/18; Y; Y10; Y10S; Y10S277/00; Y10S277/911; Y10S277/912
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2266820A
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US2487721A
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US2470355A
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US2472031A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |