Granted Patent
Utility
US 4,927,191 · App. 07/009,671
Adjustable tubular wall structure for connectors and the like
Inventor:
Erwin F. Mikol
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Feb 2, 1987
Inventor
Erwin F. Mikol
Assignee (at issue)
Twentieth Century Companies, Inc.
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.