US3457871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-priming centrifugal pump
Assignee: BBC Brown Boveri AG Germany
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Filing: 1968-02-12
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Granted: 1969-07-29
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Expires: 1988-02-12
Abstract
No abstract record available.
Inventors
- 👤 Hans Herger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:02
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/04; F16H57/042; F16H57/0427; F04; F04D; F04D9/00; F04D9/02; F16C; F16C33/00; F16C33/30; F16C33/66; F16C33/6637; F16C33/6659; F16H57/0421; F16H57/0434; F16N; F16N7/00; F16N7/30; F16N7/32; F16N7/36; F16N7/363; F16C2360/00; F16C2360/44; F16N2210/00; F16N2210/02
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) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |