Granted Patent
Utility
US 5,827,104 · App. 08/669,253
Constructional toy pieces
Inventor:
Yu Zheng
Patented Case
View Patent ↗
Granted: Oct 27, 1998
Filed: Jun 24, 1996
Inventor
Yu Zheng
Assignee (at issue)
Patent Category Corp.
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.