Granted Patent
Utility
US 4,717,246 · App. 06/749,275
Microscope with movable binocular tube
Inventors:
Erwin Fehr, Andreas Schaefer
Patented Case
View Patent ↗
Granted: Jan 5, 1988
Filed: Jun 27, 1985
Inventors
Erwin Fehr
Andreas Schaefer
Assignee (at issue)
Wild Heerbrugg 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.