Granted Patent
Utility
US 4,516,011 · App. 06/511,834
Portable electric appliance for steaming hair rollers prior to use
Inventors:
Ronald E. Jeffress, David J. Wanat, Charles Z. Krasznai
Patented Case
View Patent ↗
Granted: May 7, 1985
Filed: Jul 8, 1983
Inventors
Ronald E. Jeffress
David J. Wanat
Charles Z. Krasznai
Assignee (at issue)
BLACK & DECKER 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.