Patent FR669887A successfully refreshed from Google Patents.
FR669887A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Carriage control device effecting changes in the spacing between the workpiece and the tool in grinding machines
Assignee: WOTAN WERKE AG
•
Filing: 1929-02-19
•
Granted: 1929-11-21
•
Expires: 1949-02-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-26 20:24
CPC Classifications
B; B24; B24B; B24B49/00; B24B49/18; B24B5/00; B24B5/02; B24B5/06
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.