Improvements in the matrices for the casting of pressure pressure rivet
US1945448A
Seal for securing wire and cord
ES125355A1
Improvement in matrices of seals to produce these in shape and conditions that can be tied to its central bar the ties, being locked the knots inside the seal and riveted said bar on the outside of one of the discs
ES122793A1
Improvements in dies and tools for a melting machine and an eccentric press respectively, for the manufacture of a stamp whose cast part is embedded in sheets of celluloid cardboard, etc. that gives the maximum security guarantee
ES118415A1
An improvement in matrices of seals to tie in their interior, of unequal resistances in the unions of their disks or sheets and of graduated alloy, so that breaking the seal by the weakest parts denounces their violation.
