Granted Patent
Utility
US 4,909,340 · App. 07/306,770
Electronic weighing scale
Inventors:
Emil Kazais, Sid Hejzlar
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Feb 3, 1989
Inventors
Emil Kazais
Sid Hejzlar
Assignee (at issue)
John Chatillon & Sons, 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.