US3063564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal extractor
Assignee: Detrex Corp
•
Filing: 1960-02-24
•
Granted: 1962-11-13
•
Expires: 1980-02-24
Abstract
No abstract record available.
Inventors
- 👤 Jack C Smith
- 👤 Edwin E Etterman
- 👤 Roy T Romine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:41
CPC Classifications
D; D06; D06F; D06F43/00; D06F43/08; D06F43/081; D06F43/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1926995A
Cited
US2065978A
Cited
US1946500A
Cited
US2075175A
Cited
US2752044A
Cited
US2851164A
Cited
US2950009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |