US2669668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically driven centrifugal pump
Assignee: HERMAG PUMPS Ltd
•
Filing: 1949-02-28
•
Granted: 1954-02-16
•
Expires: 1969-02-28
Abstract
No abstract record available.
Inventors
- 👤 Okulitch George Joseph
- 👤 Zozulin Igor Vasilivich
- 👤 Okulitch Vladimir Joseph
- 👤 George M Volkoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:07
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/10; H02K49/104; H02K49/108; F; F04; F04D; F04D13/00; F04D13/02; F04D13/021; F04D13/024; H02K5/00; H02K5/04; H02K5/12; H02K5/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB142140A
Cited
GB192618A
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US2300778A
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US2506798A
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US2422040A
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US2452945A
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US2460015A
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US2471753A
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US2568348A
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US2506886A
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US2481172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |