Patent US2566795A successfully refreshed from Google Patents.
US2566795A
Expired / Lapsed
US
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Rotor wheel for centrifugal pumps
Assignee: Individual
•
Filing: 1947-12-18
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Granted: 1951-09-04
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Expires: 1967-12-18
Abstract
No abstract record available.
Inventors
- 👤 Egger Emile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:02
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2205; F04D29/40; F04D29/42; F04D29/426; F04D29/4273; F04D29/44; F04D29/445; F04D29/448; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US21756A
Cited
US678223A
Cited
US867069A
Cited
AT65687B
Cited
US1050698A
Cited
AT82191B
Cited
US1909052A
Cited
US2074650A
Cited
GB537282A
Cited
US2420420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |