Granted Patent
Utility
US 6,048,098 · App. 08/467,084
Tamper-resistant envelope
Inventor:
Kurt Vetter
Patented Case
View Patent ↗
Granted: Apr 11, 2000
Filed: Jun 6, 1995
Inventor
Kurt Vetter
Assignee (at issue)
Uniflex Company, Ltd.
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.