Granted Patent
Utility
US 4,553,438 · App. 06/601,893
Centrifugal carton tester
Inventors:
Raymond L. Dawson, Clayton Dodd, Bobby E. Harrell, Grady E. Lee
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Apr 19, 1984
Inventors
Raymond L. Dawson
Clayton Dodd
Bobby E. Harrell
Grady E. Lee
Assignee (at issue)
Manville Service 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.