Patent DE666845C successfully refreshed from Google Patents.
DE666845C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Process for increasing the performance of grinding wheels by milling
Assignee: DEUTSCHE NORTON GmbH
•
Filing: 1935-12-04
•
Granted: 1938-10-29
•
Expires: 1955-12-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-06 13:40
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/34; B24D3/346; B24D3/348
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
Maintenance schedule is calculated for granted US utility patents.