Inventor
HARTMANN JOHN L
US4 patents
Patents
4 patentsUS5280673AJan 25, 1994
Electromagnetic bolt insertion system
ELECTROIMPACT INC27 citations89
US5279024AJan 18, 1994
Apparatus and method to prevent rivet shanking
ELECTROIMPACT INC7 citations71
US5437094AAug 1, 1995
Electromagnetic bolt insertion and collar swaging system
ELECTROIMPACT INC11 citations70
US5201205AApr 13, 1993
Two axis tracer for fastener operations
ELECTROIMPACT INC10 citations69