Patent US2443584A successfully refreshed from Google Patents.
US2443584A
Expired / Lapsed
US
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Dusting device
Assignee: NACO Manufacturing Co
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Filing: 1944-02-24
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Granted: 1948-06-15
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Expires: 1964-02-24
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Root
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:44
CPC Classifications
B; B05; B05B; B05B11/00; B05B11/01; B05B11/06; B05B11/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1207794A
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US1536352A
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US1712804A
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US1769904A
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US1837136A
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US2068871A
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US2086696A
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FR835761A
Cited
US2208853A
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US2226013A
Cited
US2219208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-15 | 1951-12-15 | 1952-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-15 | 1955-12-15 | 1956-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-15 | 1959-12-15 | 1960-06-15 | $7700.00 | Window Closed / Lapsed |