Patent DE914723C successfully refreshed from Google Patents.
DE914723C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Drills for rock drilling machines
Assignee: Wallram Hartmetall GmbH
•
Filing: 1949-02-03
•
Granted: 1954-07-08
•
Expires: 1969-02-03
Abstract
No abstract record available.
Inventors
- 👤 Willi Fuchs
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-08 14:54
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/36; E21B10/40
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
Maintenance schedule is calculated for granted US utility patents.