US2443584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dusting device
Assignee: NACO Manufacturing Co
•
Filing: 1944-02-24
•
Granted: 1948-06-15
•
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 06:36
CPC Classifications
B; B05; B05B; B05B11/00; B05B11/01; B05B11/06; B05B11/062
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1207794A
Cited
US1536352A
Cited
US1712804A
Cited
US1769904A
Cited
US1837136A
Cited
US2068871A
Cited
US2086696A
Cited
FR835761A
Cited
US2208853A
Cited
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 |