US3407740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable geometry centrifugal pump
Assignee: Borg Warner Corp
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Filing: 1967-04-14
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Granted: 1968-10-29
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Expires: 1987-04-14
Abstract
No abstract record available.
Inventors
- 👤 Bertram P Samerdyke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:33
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/24; F04D29/247; F04D15/00; F04D15/0027; F04D15/0038; F04D29/04; F04D29/042
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) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |