Granted Patent
Utility
US 4,585,565 · App. 06/674,286
Metalworking lubricant comprising mineral oil and alkoxyalkyl ester
Inventor:
Mei-Yuan Tsai
Patented Case
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Granted: Apr 29, 1986
Filed: Nov 23, 1984
Inventor
Mei-Yuan Tsai
Assignee (at issue)
Aluminum Company of America
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.