Patent US2419905A successfully refreshed from Google Patents.
US2419905A
Expired / Lapsed
US
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Centrifugal pump
Assignee: Individual
•
Filing: 1944-06-06
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Granted: 1947-04-29
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Expires: 1964-06-06
Abstract
No abstract record available.
Inventors
- 👤 Miess Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:39
CPC Classifications
F; F04; F04D; F04D1/00; F04D1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190004058A
Cited
US740151A
Cited
US731095A
Cited
GB190907848A
Cited
US1074403A
Cited
US1883456A
Cited
US1921720A
Cited
US2028569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-28 | 1950-10-28 | 1951-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-28 | 1954-10-28 | 1955-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-28 | 1958-10-28 | 1959-04-29 | $7700.00 | Window Closed / Lapsed |