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Don't know the exact year, but they where built between 1929 and 1936
1935 to 1936. Worth a couple of hundred dollars.
1930 genral electric refrigerator needing legs
Bridgeport - machine tool brand - was created in 1938.
I can partially answer your question. I have one of these and it still runs. My parents bought it used when he came home from WWII in 1945. I can not find a date on it anywhere. The label calls it a refrigerating machine--not a refrigerator.
1934
1933
A bridgeport mill, with a boring head adapter, will clean up and provide very round and close tolerance diameters. ie a bushing.
An engine is a type of machine.Machine is a more general term and would include electric, mechanical or electronic devices.
Electric Sulking Machine was created in 1999.
The surface of electric machine are smooth why
The industry leaders in NC machine tools are General Electric and Allen-Bradley, both of which primarily manufacture control systems.