Granted Patent
Utility
US 4,798,412 · App. 07/136,136
Two piece booster seat with multiple seat heights
Inventors:
Louis M. Kohus, John V. Mariol
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: Dec 21, 1987
Inventors
Louis M. Kohus
John V. Mariol
Assignee (at issue)
KohusMariol, 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.