Granted Patent
Utility
US 4,869,626 · App. 07/194,417
High speed drilling spindle
Inventor:
Wojciech B. Kosmowski
Patented Case
View Patent ↗
Granted: Sep 26, 1989
Filed: May 13, 1988
Inventor
Wojciech B. Kosmowski
Assignee (at issue)
Dynamotion Corporation
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.