Patent US3393899A successfully refreshed from Google Patents.
US3393899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing apparatus
Assignee: Individual
•
Filing: 1966-03-14
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Granted: 1968-07-23
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Expires: 1986-03-14
Abstract
No abstract record available.
Inventors
- 👤 Novell E Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:53
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/27; B01F33/50; B01F33/502; B01F33/5021; B01F27/00; B01F27/05; B01F27/11; B01F27/114; B01F27/23; B01F27/232; B01F27/2321
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US192224A
Cited
US3273734A
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US648609A
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US1457325A
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US2328888A
Cited
US2445928A
Cited
US2636724A
Cited
US2676721A
Cited
US3163403A
Cited
US3129927A
Cited
US3321035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |