Granted Patent
Utility
US 5,576,520 · App. 08/279,953
Checkweigher having variable weigh platform
Inventors:
David Waterman, John W. Lindstrom
Patented Case
View Patent ↗
Granted: Nov 19, 1996
Filed: Jul 25, 1994
Inventors
David Waterman
John W. Lindstrom
Assignee (at issue)
Hi-Speed Checkweigher Co., 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.