Patents/Inventors

Andrew Leroy Hjortland

Stoughton, WIUS6 patents

7 Patents

US125042102025
Energy Efficient Heat Pump with Control System and Compressor Injection
Tyco Fire & Security GmbH
0 cites
US124050222025
Energy Efficient Heat Pump with Counterflow Heat Transfer Arrangement
TYCO FIRE & SECURITY GmbH
0 cites
US124050242025
Heat Pump Control Systems and Methods
TYCO FIRE & SECURITY GmbH
0 cites
US123791282025
Energy Efficient Heat Pump Systems and Methods
Johnson Controls Light Commercial IP GmbH
0 cites
US122158842025
Energy Efficient Heat Pump Systems and Methods
TYCO FIRE & SECURITY GmbH
0 cites
US121637002024
Energy Efficient Heat Pump with Flow Regulation System
TYCO FIRE & SECURITY GmbH
0 cites
US119061882024
Energy Efficient Heat Pump Systems and Methods
Johnson Controls Tyco IP Holdings LLP
0 cites