Granted Patent
Utility
US 4,942,676 · App. 07/203,129
Control system for air flotation dryer with a built-in afterburner
Inventors:
Richard J. Wimberger, Donald L. Wickesberg, Richard A. Carman
Patented Case
View Patent ↗
Granted: Jul 24, 1990
Filed: Jun 7, 1988
Inventors
Richard J. Wimberger
Donald L. Wickesberg
Richard A. Carman
Assignee (at issue)
W.R. Grace & Co. Conn.
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.