|
US2014950A
|
|
Gas compressor
|
|
US1709153A
|
|
Fracture bed
|
|
US1555075A
|
|
Expansion valve
|
|
US1533336A
|
|
Refrigerating apparatus
|
|
US1623811A
|
|
Liquid-level regulating and controlling apparatus
|
|
US1521713A
|
|
Ice-harvesting apparatus
|
|
US1521712A
|
|
Scored ice block and method
|
|
US1521711A
|
|
Artificial-ice-making apparatus
|
|
US1521710A
|
|
Artificial-ice-making apparatus
|
|
US1478396A
|
|
Tank-room structure
|
|
US1481928A
|
|
Artificial refrigerating apparatus
|
|
US1481927A
|
|
Artificial-ice-making apparatus
|
|
US1521709A
|
|
Artificial-ice-harvesting apparatus
|
|
US1379694A
|
|
Ice-machine compressor
|
|
US1293648A
|
|
Ice machinery.
|
|
CA151928A
|
|
Ice making machinery
|
|
CA151925A
|
|
Ice producing process
|
|
CA151930A
|
|
Ice making machine
|
|
CA151424A
|
|
Ice machine compressor
|
|
CA151927A
|
|
Ice producing apparatus
|
