SURMAS
APPARATUS FOR PROTECTION AGAINST SHOCK CAUSED BY SHORT CIRCUITS ON ELECTRICALLY OPERATED MACHINERY AND APPLIANCES, SAID APPARATUS CONSISTING OF A COIL AND SWITCH AND FUNCTIONING TO BREAK THE POWER CIRCUIT UPON ACCIDENTAL GROUNDING OF THE LINE CONDUCTOR ON THE MACHINERY AND/OR APPLIANCES
Expired · December 31, 1945 · 71494168 ·