Patent US3036760A successfully refreshed from Google Patents.
US3036760A
Expired / Lapsed
US
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Centrifuge construction
Assignee: Dorr Oliver Inc
•
Filing: 1959-04-16
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Granted: 1962-05-29
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Expires: 1979-04-16
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Halbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:15
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/10; B04B1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE513122A
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US316124A
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US436419A
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US1866638A
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US2525629A
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US2702124A
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US2949282A
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US2928592A
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US2958461A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |