|
US1514093A
|
|
Electric generating apparatus and method
|
|
US1321230A
|
|
Artificial-refrigeration method and apparatus.
|
|
US1252472A
|
|
Method and apparatus for ventilating and refrigerating.
|
|
US1123134A
|
|
Method and apparatus for casting.
|
|
US1057005A
|
|
Portable electrically-operated tool.
|
|
US870836A
|
|
Floor-surfacer.
|
|
US878483A
|
|
Ice-machine compressor.
|
|
US969388A
|
|
Machine-tool.
|
|
US825973A
|
|
Compressor for ice-machines.
|
|
US759458A
|
|
Coin-controlled vending-machine.
|
|
US664880A
|
|
Evaporating apparatus.
|
|
US645179A
|
|
Apparatus for reducing zinc.
|
|
US666019A
|
|
Drilling-machine.
|
|
US645178A
|
|
Process of reducing easily-oxidizable metals.
|
|
US665966A
|
|
Machine-tool.
|
|
US633207A
|
|
Refining or crystallizing apparatus.
|
|
US633206A
|
|
Process of and apparatus for refining or crystallizing soluble crystalline substances.
|
