| 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} |