Granted Patent
Utility
US 4,782,977 · App. 07/133,578
Tamper resistant container
Inventors:
Gary Watanabe, Johnson N. S. Wong
Patented Case
View Patent ↗
Granted: Nov 8, 1988
Filed: Dec 16, 1987
Inventors
Gary Watanabe
Johnson N. S. Wong
Assignee (at issue)
Evergreen Industries, 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.