Granted Patent
Utility
US 5,216,539 · App. 07/688,621
Device of the mirror type in the range of X-UV rays
Inventors:
Pierre Boher, Philippe Houdy
Patented Case
View Patent ↗
Granted: Jun 1, 1993
Filed: May 23, 1991
Inventors
Pierre Boher
Philippe Houdy
Assignee (at issue)
U.S. Philips 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.