Granted Patent
Utility
US 5,857,262 · App. 08/752,061
Cordless hydrocarbon fuel heated hairdryer
Inventors:
James Bonnema, Steven Shapiro, Karl Winkler
Patented Case
View Patent ↗
Granted: Jan 12, 1999
Filed: Nov 19, 1996
Inventors
James Bonnema
Steven Shapiro
Karl Winkler
Assignee (at issue)
The Schawbel 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.