Granted Patent
Utility
US 4,846,510 · App. 06/487,865
Adjustable tubular wall structure for connectors and the like
Inventor:
Erwin F. Mikol
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Apr 22, 1983
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.