Granted Patent
Utility
US 5,042,972 · App. 07/439,089
Toy building set provided with elements that can sense bar codes
Inventors:
Erik Bach, Allan Toft
Patented Case
View Patent ↗
Granted: Aug 27, 1991
Filed: Nov 20, 1989
Inventors
Erik Bach
Allan Toft
Assignee (at issue)
Interlego AG
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.