US2128673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for balancing a grinding wheel
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1937-08-11
•
Granted: 1938-08-30
•
Expires: 1957-08-11
Abstract
No abstract record available.
Inventors
- 👤 Andrew B Holmstrom
- 👤 Wahlberg Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:51
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/32; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49764; Y10T29/49771; Y10T29/49774
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-08-29 | 1942-02-28 | 1942-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-08-29 | 1946-02-28 | 1946-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-08-29 | 1950-02-28 | 1950-08-30 | $7700.00 | Window Closed / Lapsed |