Title:
Hydraulic support prop
United States Patent 3281107

Inventors:
Lewis, Warren J.
Publication Date:
10/25/1966
View Patent Images:
Download PDF 3281107 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
OHIO BRASS CO
Primary Class:
254/93R
International Classes:
E21D15/45; E21D15/00
Foreign References:
FR1249070A