Patent US3419250A successfully refreshed from Google Patents.
US3419250A
Expired / Lapsed
US
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Continuous mixer discharge control
Assignee: Read Corp
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Filing: 1966-10-25
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Granted: 1968-12-31
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Expires: 1986-10-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Ambrose Kirk Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:35
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/75; B01F35/751
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US976363A
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US1051101A
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US2434707A
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US2600408A
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US2883162A
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US2845255A
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US3064908A
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US3198491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |