Granted Patent
Utility
US 4,669,189 · App. 06/889,991
Hair cutting apparatus, in particular electric hair cutting apparatus
Inventor:
Roland Ullmann
Patented Case
View Patent ↗
Granted: Jun 2, 1987
Filed: Jul 28, 1986
Inventor
Roland Ullmann
Assignee (at issue)
The Braun 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.