Granted Patent
Utility
US 4,906,320 · App. 07/182,160
Apparatus for infrared sealing of plastic strap
Inventor:
Robert Powers
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Apr 15, 1988
Inventor
Robert Powers
Assignee (at issue)
The Interlake Companies, 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.