US2492231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable sander
Assignee: Blackhawk Manufacturing Co
•
Filing: 1945-06-18
•
Granted: 1949-12-27
•
Expires: 1965-06-18
Abstract
No abstract record available.
Inventors
- 👤 Mandl Siegmund
- 👤 Edward M Pfauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:25
CPC Classifications
B; B24; B24B; B24B23/00; B24B23/04; B24B23/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1818361A
Cited
FR674838A
Cited
US1761059A
Cited
US2123426A
Cited
US2193419A
Cited
US2204486A
Cited
US2395537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |