Granted Patent
Utility
US 5,031,492 · App. 07/485,200
Basic tool holder for attachment in an accommodating recess, particularly a turret head
Inventor:
Karl Zinner
Patented Case
View Patent ↗
Granted: Jul 16, 1991
Filed: Feb 26, 1990
Inventor
Karl Zinner
Assignee (at issue)
Zinner GmbH Prazisionswerkzeug
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.