Granted Patent
Utility
US 4,437,668 · App. 06/385,146
Puzzle post toy
Inventors:
Danny E. Simpson, David M. Williams, Richard A. Chase, Lawrence B. Grubb
Patented Case
View Patent ↗
Granted: Mar 20, 1984
Filed: Jun 4, 1982
Inventors
Danny E. Simpson
David M. Williams
Richard A. Chase
Lawrence B. Grubb
Assignee (at issue)
Johnson & Johnson Baby Products Company
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.