US2609064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cleaning filter screens
Assignee: Bahnson Co
•
Filing: 1951-01-15
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Granted: 1952-09-02
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Expires: 1971-01-15
Abstract
No abstract record available.
Inventors
- 👤 Jr James F King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:31
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/66; B01D46/68; B01D46/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |