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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Hachenberg; Winfried
Address:
Dortmund, DE
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
4557635 Shield-type support frame December 10, 1985
A shield-type support frame for serving as a face support in underground mining operations having a bottom structure, a one-piece roof cap, at least one hydraulic plunger connecting the bottom structure and the roof cap and two shield elements arranged side by side, which can be adjusted










 
 
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