Granted Patent
Utility
US 5,059,375 · App. 07/435,558
Apparatus and method for producing kink resistant tubing
Inventor:
Erin J. Lindsay
Patented Case
View Patent ↗
Granted: Oct 22, 1991
Filed: Nov 13, 1989
Inventor
Erin J. Lindsay
Assignee (at issue)
Minnesota Mining and Manufacturing Company
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.