Granted Patent
Utility
US 6,816,321 · App. 10/434,298
Afocal zoom for use in microscopes
Inventors:
Klaus-Peter Zimmer, Ruedi Rottermann
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: May 8, 2003
Inventors
Klaus-Peter Zimmer
Ruedi Rottermann
Assignee (at issue)
Leica Microsystems (Schweiz) AG
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.