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Patent US3411451A successfully refreshed from Google Patents.
US3411451A
Expired / Lapsed
US
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Centrifugal pump inlet elbow
Assignee: JM Voith GmbH
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Filing: 1967-02-13
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Granted: 1968-11-19
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Expires: 1987-02-13
Abstract
No abstract record available.
Inventors
- 👤 Matthias Heinz-Bernd
- 👤 Offenhauser Hans
- 👤 Schramek Walter
- 👤 Strscheletzky Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:39
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/426; F04D29/4273; F04D29/44; F04D29/445; F04D29/448; F05; F05B; F05B2240/00; F05B2240/10; F05B2240/12; F05B2240/121
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |