Granted Patent
Utility
US 4,521,052 · App. 06/420,543
Booster seat
Inventor:
Richard E. Cone
Patented Case
View Patent ↗
Granted: Jun 4, 1985
Filed: Sep 20, 1982
Inventor
Richard E. Cone
Assignee (at issue)
Spalding & Evenflo 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.