194 / | HD | CHECK-ACTUATED CONTROL MECHANISMS |
302 | DF | INCLUDING MEANS TO TEST VALIDITY OF CHECK {4} |
303 | DF | .~ By testing material composition {4} |
320 | .~.~ Having magnetic field acting on check {3} | |
321 | DF | .~.~.~> And scavenger mechanism {2} |
324 | DF | .~.~.~> And magnetically actuated deflector or stop |
325 | DF | .~.~.~> Speed or path of check altered {1} |