US2769285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive polishing wheel and element
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1953-10-26
•
Granted: 1956-11-06
•
Expires: 1973-10-26
Abstract
No abstract record available.
Inventors
- 👤 Fritz E Hendrickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:08
CPC Classifications
B; B24; B24D; B24D13/00; B24D13/02; B24D13/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1819171A
Cited
US1882769A
Cited
US1897971A
Cited
US2226624A
Cited
US2290236A
Cited
US2574037A
Cited
US2581411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |