Granted Patent
Utility
US 4,939,764 · App. 07/126,544
Spot film apparatus and method of operating same
Inventor:
Mark Markos
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Nov 30, 1987
Inventor
Mark Markos
Assignee (at issue)
FISCHER IMAGING, INC.
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.