National Geothermal, Inc. Trademarks
NATIONAL GEOTHERMAL
Filed: February 23, 1981
Ground Water Source Heat Pumps for Heating and Cooling Systems Used in Domestic and Commercial Buildings
Owned by: National Geothermal, Inc.
Serial Number: 73298100
HYDROSOLAR
Filed: February 8, 1982
GROUND WATER ENERGY SOURCE HEATING AND COOLING SYSTEMS
Owned by: National Geothermal, Inc.
Serial Number: 73349240
ECHO
Filed: March 11, 1982
Ground Water Heat Pumps for Heating and Cooling Water and which Utilize Ground Water as a Heat Source (for Heating) and…
Owned by: National Geothermal, Inc.
Serial Number: 73353993
