Granted Patent
Utility
US 5,015,313 · App. 07/435,087
Process for heat sealing packages
Inventors:
Terrence M. Drew, Chris A. Hanson, Alden B. Hanson
Patented Case
View Patent ↗
Granted: May 14, 1991
Filed: Nov 9, 1989
Inventors
Terrence M. Drew
Chris A. Hanson
Alden B. Hanson
Assignee (at issue)
Alden Laboratories, 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.