Patent US3500754A successfully refreshed from Google Patents.
US3500754A
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Centrifugal pump units
Assignee: Loewe Pumpenfabrik GmbH
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Filing: 1968-01-25
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Granted: 1970-03-17
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Expires: 1988-01-25
Abstract
No abstract record available.
Inventors
- 👤 Gunther Boes
- 👤 Willi Plumeyer
- 👤 Christian Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:14
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/04; F04D29/043; F04D29/044; F16; F16F; F16F15/00; F16F15/10; F05; F05B; F05B2240/00; F05B2240/60; F05B2240/62
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) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |