Patent DE641014C successfully refreshed from Google Patents.
US2358138A
Expired / Lapsed
US
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Dusting apparatus
Assignee: BF Sturtevant Co
•
Filing: 1942-08-29
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Granted: 1944-09-12
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Expires: 1962-08-29
Abstract
No abstract record available.
Inventors
- 👤 Charles E Blanchard
- 👤 Albert W Ferre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:49
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0067; B29C37/0071; Y; Y10; Y10S; Y10S118/00; Y10S118/22
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) | 1947-09-12 | 1948-03-13 | 1948-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-09-12 | 1952-03-13 | 1952-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-09-12 | 1956-03-13 | 1956-09-12 | $7700.00 | Window Closed / Lapsed |