US3135499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material mixing and dispersing apparatus
Assignee: Cowles Dissolver Co Inc
•
Filing: 1959-07-01
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Granted: 1964-06-02
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Expires: 1979-07-01
Abstract
No abstract record available.
Inventors
- 👤 Donald J Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:46
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/805; A; A47; A47J; A47J43/00; A47J43/04; A47J43/044; B01F35/00; B01F35/30; B01F35/32; B01F35/324
Claims Analysis
Total Claims: 0
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US2811338A
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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) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |