Granted Patent
Utility
US 5,986,269 · App. 08/932,981
Correction device for correcting chromatic aberration in particle-optical apparatus
Inventors:
Marcellinus P. C. M. Krijn, Alexander Henstra, Karel Diederick Van Der Mast
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Sep 18, 1997
Inventors
Marcellinus P. C. M. Krijn
Alexander Henstra
Karel Diederick Van Der Mast
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.