Granted Patent
Utility
US 4,671,572 · App. 06/746,268
Adjustable chair having roller cam adjustment mechanism
Inventors:
Ronald L. Young, Eugene Rock, David Brandt
Patented Case
View Patent ↗
Granted: Jun 9, 1987
Filed: Jun 19, 1985
Inventors
Ronald L. Young
Eugene Rock
David Brandt
Assignee (at issue)
Erda, 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.