Patent US2931661A successfully refreshed from Google Patents.
US2931661A
Expired / Lapsed
US
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Apparatus for cleaning brushes
Assignee: Individual
•
Filing: 1958-02-07
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Granted: 1960-04-05
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Expires: 1978-02-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph N Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:58
CPC Classifications
A; A46; A46B; A46B17/00; A46B17/06; Y; Y10; Y10S; Y10S279/00; Y10S279/906; Y10S408/00; Y10S408/714; Y10T; Y10T279/00; Y10T279/17; Y10T279/17957; Y10T279/17965; Y10T403/00; Y10T403/45; Y10T403/453
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) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |