US2442129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diamond grinding wheel construction
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1945-08-06
•
Granted: 1948-05-25
•
Expires: 1965-08-06
Abstract
No abstract record available.
Inventors
- 👤 Gunnar E Hollstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:36
CPC Classifications
B; B24; B24D; B24D7/00; B24D7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US415004A
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US1133475A
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DE327054C
Cited
GB212128A
Cited
DE399114C
Cited
US1831913A
Cited
US1951977A
Cited
US2281525A
Cited
US2225193A
Cited
US2150886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-25 | 1951-11-24 | 1952-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-25 | 1955-11-24 | 1956-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-25 | 1959-11-24 | 1960-05-25 | $7700.00 | Window Closed / Lapsed |