Filed: February 25, 1975 ELECTRICAL HEATING SYSTEMS FOR HOUSES CHARACTERIZED BY ONE TEMPERATURE CONTROL PANEL, ROOM THERMOSTATS, AND HEATING ELECTRIC… Owned by:ELPAN APS Serial Number:73045104
Filed: June 27, 1978 ENVIRONMENTAL CONTROL APPARATUS-NAMELY, RADIANT HEATING SYSTEMS COMPRISING RADIANT HEATING PANELS AND AUTOMATIC TIME AND… Owned by:ELPAN APS Serial Number:73176181