Granted Patent
Utility
US 6,689,428 · App. 10/184,229
Artificial bark for a decorative tree
Inventor:
Cheung Chong Kao
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Jun 28, 2002
Inventor
Cheung Chong Kao
Assignee (at issue)
Boto Licenses Limited
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.