Granted Patent
Utility
US 4,973,190 · App. 07/487,534
Barrel and barrel base
Inventors:
Carl L. Erwin, Dusan Krulj, Herbert Kramer
Patented Case
View Patent ↗
Granted: Nov 27, 1990
Filed: Mar 2, 1990
Inventors
Carl L. Erwin
Dusan Krulj
Herbert Kramer
Assignee (at issue)
Flex-o-lite, 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.