Granted Patent
Utility
US 4,604,012 · App. 06/573,619
Tool clamping device for a spindle head
Inventors:
Hisamitsu Kawasaki, Yukio Kato
Patented Case
View Patent ↗
Granted: Aug 5, 1986
Filed: Jan 25, 1984
Inventors
Hisamitsu Kawasaki
Yukio Kato
Assignee (at issue)
Toyoda Koki Kabushiki Kaisha
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.