Granted Patent
Utility
US 5,838,004 · App. 08/849,205
Particle-optical apparatus comprising a fixed diaphragm for the monochromator filter
Inventors:
Peter Christiaan Tiemeijer, J. Chmelik, Pieter Kruit
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Jun 2, 1997
Inventors
Peter Christiaan Tiemeijer
J. Chmelik
Pieter Kruit
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.