Patent US2660122A successfully refreshed from Google Patents.
US2660122A
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US
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Centrifugal pump
Assignee: Goulds Pumps Inc
•
Filing: 1950-12-07
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Granted: 1953-11-24
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Expires: 1970-12-07
Abstract
No abstract record available.
Inventors
- 👤 Erik G Landberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:03
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/20; F04D1/00; F04D1/006; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7018; Y10T403/7021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US674832A
Cited
US1075523A
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US1334461A
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GB175530A
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US1545608A
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DE598445C
Cited
US2073733A
Cited
US2358744A
Cited
US2401536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |