72389932
May 5, 1971
Mar 13, 1973
ELECTRICALLY-OPERATED VALVE CONTROLS FOR GAS AND OIL BURNERS-NAMELY, ACTUATOR MOTORS FOR VALVES AND BURNERS, TRIP-RELEASE AND TRIP-DELAY DEVICES FOR VALVES, AND ELECTRICAL SWITCHES FOR USE WITH SUCH TRIP-RELEASE DEVICES; AND SPARK-IGNITION PLUGS AND FLAME SENSING RODS FOR ELECTRICALLY-CONTROLLED GAS AND OIL BURNERS
Housewares and Glass