Granted Patent
Utility
US 4,526,245 · App. 06/510,679
Force balancing weighing system
Inventors:
Walter Ruf, Robert G. Kelley
Patented Case
View Patent ↗
Granted: Jul 2, 1985
Filed: Jul 5, 1983
Inventors
Walter Ruf
Robert G. Kelley
Assignee (at issue)
St. Regis Corporation
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.