Granted Patent
Utility
US 4,927,271 · App. 07/282,615
Recloseable tamper evident bag with hooded closure
Inventor:
Mark Branson
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Dec 12, 1988
Inventor
Mark Branson
Assignee (at issue)
KCL Corporation
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.