Granted Patent
Utility
US 5,902,168 · App. 08/809,495
Coupling element for a constructional building set
Inventors:
Ole V. Poulsen, Jan Hatting
Patented Case
View Patent ↗
Granted: May 11, 1999
Filed: May 5, 1997
Inventors
Ole V. Poulsen
Jan Hatting
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.