Granted Patent
Utility
US 5,137,486 · App. 07/687,386
Multi-planar connector element for construction toy
Inventor:
Joel I. Glickman
Patented Case
View Patent ↗
Granted: Aug 11, 1992
Filed: Apr 18, 1991
Inventor
Joel I. Glickman
Assignee (at issue)
Connector Set Toy 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.