29 / | HD | METAL WORKING |
700 | DF | MEANS TO ASSEMBLE OR DISASSEMBLE {55} |
709 | DF | .~ With control means energized in response to activator stimulated by condition sensor {4} |
714 | .~.~ Responsive to work or work-related machine element {4} | |
715 | DF | .~.~.~> With means to fasten by deformation {1} |
717 | DF | .~.~.~> With means to fasten by elastic joining |
718 | DF | .~.~.~> With means to fasten by frictional fitting |
719 | DF | .~.~.~> Including means to apply magnetic force directly to position or hold work |