US2424679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for disseminating materials in liquids
Assignee: COWLES CO
•
Filing: 1942-11-18
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Granted: 1947-07-29
•
Expires: 1962-11-18
Abstract
No abstract record available.
Inventors
- 👤 Cowles Edwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:52
CPC Classifications
D; D21; D21D; D21D1/00; D21D1/20; D21D1/32; B; B01; B01F; B01F27/00; B01F27/05; B01F27/11; B01F27/115; B01F27/80; B01F27/93; B01F27/19; B01F27/191; B01F35/00; B01F35/50; B01F35/53; B01F35/531
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1208534A
Cited
US1819118A
Cited
US1768957A
Cited
FR848103A
Cited
GB517797A
Cited
US2265936A
Cited
US2235604A
Cited
US2270480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |