Patent US3486740A successfully refreshed from Google Patents.
US3486740A
Expired / Lapsed
US
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Apparatus for treating flowable materials
Assignee: Jude Engineering Inc
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Filing: 1967-03-02
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Granted: 1969-12-30
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Expires: 1987-03-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph Dennis Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:24
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/90; B01F35/95; B01F27/00; B01F27/05; B01F27/11; B01F27/114
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US158246A
Cited
US1224981A
Cited
US1717465A
Cited
US1971873A
Cited
US3049413A
Cited
GB909889A
Cited
US3386708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |