335 / | HD | ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS |
209 | DF | MAGNETS AND ELECTROMAGNETS {10} |
296 | DF | .~ Magnet structure or material {4} |
302 | DF | .~.~ Permanent magnets {4} |
303 | .~.~.~ Enclosed in flexible plastic, cloth or tape |