Patent DE878100C successfully refreshed from Google Patents.
Patent US2433814A successfully refreshed from Google Patents.
US2433814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulpstone
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1946-05-18
•
Granted: 1947-12-30
•
Expires: 1966-05-18
Abstract
No abstract record available.
Inventors
- 👤 Norman F Holter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:52
CPC Classifications
B; B24; B24D; B24D5/00; B24D5/06; B24D5/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-29 | 1951-06-30 | 1951-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-29 | 1955-06-30 | 1955-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-29 | 1959-06-30 | 1959-12-30 | $7700.00 | Window Closed / Lapsed |