US2640489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for cleaning paintbrushes, including liquid tanks and brush holders thereabove
Assignee: Individual
•
Filing: 1951-02-27
•
Granted: 1953-06-02
•
Expires: 1971-02-27
Abstract
No abstract record available.
Inventors
- 👤 Calvin E Boland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:50
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US601508A
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US892104A
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US904731A
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US1493916A
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US1542025A
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US1573977A
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US1613396A
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US2239741A
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US2354898A
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US2449818A
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US2519259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |