Patent US2288337A successfully refreshed from Google Patents.
US2288337A
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US
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Rotary brush section
Assignee: Osborn Manufacturing Corp
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Filing: 1939-06-26
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Granted: 1942-06-30
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Expires: 1959-06-26
Abstract
No abstract record available.
Inventors
- 👤 William S Whittle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:52
CPC Classifications
A; A46; A46B; A46B13/00; A46B13/001; A46B13/003; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-06-29 | 1945-12-29 | 1946-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-06-29 | 1949-12-29 | 1950-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-06-29 | 1953-12-29 | 1954-06-30 | $7700.00 | Window Closed / Lapsed |