Granted Patent
Utility
US 5,545,459 · App. 08/375,706
Business forms having dual-functional coating
Inventor:
John C. H. Chang
Patented Case
View Patent ↗
Granted: Aug 13, 1996
Filed: Jan 20, 1995
Inventor
John C. H. Chang
Assignee (at issue)
Wallace Computer Services, Inc.
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.