Patent US1850272A successfully refreshed from Google Patents.
US1850272A
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US
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Method and means for removing sawdust
Assignee: Individual
•
Filing: 1930-08-25
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Granted: 1932-03-22
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Expires: 1950-08-25
Abstract
No abstract record available.
Inventors
- 👤 Shaw James Royal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:36
CPC Classifications
B; B27; B27G; B27G3/00; B27B; B27B31/00; B27B31/08; Y; Y10; Y10S; Y10S29/00; Y10S29/082; Y10T; Y10T83/00; Y10T83/04; Y10T83/0448; Y10T83/0453; Y10T83/202; Y10T83/2066; Y10T83/242; Y10T83/929; Y10T83/9319
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) | 1935-03-22 | 1935-09-21 | 1936-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-22 | 1939-09-21 | 1940-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-22 | 1943-09-21 | 1944-03-22 | $7700.00 | Window Closed / Lapsed |