Granted Patent
Utility
US 4,969,969 · App. 07/336,910
Apparatus and method for infrared sealing of plastic strap
Inventor:
Robert Powers
Patented Case
View Patent ↗
Granted: Nov 13, 1990
Filed: Apr 12, 1989
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.