US2783592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal grinder
Assignee: Individual
•
Filing: 1952-12-30
•
Granted: 1957-03-05
•
Expires: 1972-12-30
Abstract
No abstract record available.
Inventors
- 👤 Edward F Chandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:16
CPC Classifications
B; B24; B24B; B24B25/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US439154A
Cited
US790099A
Cited
US1326423A
Cited
US1337617A
Cited
FR493470A
Cited
US1662078A
Cited
US1667064A
Cited
US1897035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |