Method for fastening workpieces to metal plates
United States Patent 2673390
Inventors:
Johan, Broberg Georg Karl
Publication Date:
03/30/1954
Assignee:
SVENSKA FIAKTFABRIKEN AB
Other Classes:
188/250D, 29/521, 138/39, 29/522.100, 29/515
International Classes:
B21D39/03; F16B5/04; F16B17/00; F16B5/00