US2960939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor attachment for centrifugal pumps
Assignee: FIRM AMAG HILPERT PEGNITZHUTTE
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Filing: 1958-03-10
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Granted: 1960-11-22
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Expires: 1978-03-10
Abstract
No abstract record available.
Inventors
- 👤 Buschhorn Walther
- 👤 Schaffer Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:51
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/20; F16; F16B; F16B2200/00; F16B2200/60; Y; Y10; Y10T; Y10T403/00; Y10T403/46
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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |