US2431822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive belt polishing machine
Assignee: Individual
•
Filing: 1942-05-13
•
Granted: 1947-12-02
•
Expires: 1962-05-13
Abstract
No abstract record available.
Inventors
- 👤 Ernest E Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:09
CPC Classifications
B; B24; B24B; B24B21/00; B24B21/006; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49332
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US960408A
Cited
GB264625A
Cited
US1691898A
Cited
US1841411A
Cited
US2085016A
Cited
US1984453A
Cited
US2072951A
Cited
US2136491A
Cited
US2123269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-01 | 1951-06-02 | 1951-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-01 | 1955-06-02 | 1955-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-01 | 1959-06-02 | 1959-12-02 | $7700.00 | Window Closed / Lapsed |