US2765085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary suction drum filter
Assignee: Black Clawson Co
•
Filing: 1954-02-24
•
Granted: 1956-10-02
•
Expires: 1974-02-24
Abstract
No abstract record available.
Inventors
- 👤 Strindlund John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:04
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/70; B01D33/74; B01D33/06; B01D33/073; B01D33/58; B01D33/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2588976A
Cited
US1359578A
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DE588818C
Cited
US2111843A
Cited
US2139445A
Cited
US2537414A
Cited
US2548999A
Cited
DE865106C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |