Granted Patent
Utility
US 4,865,812 · App. 07/010,344
Integral specimen collection tube and microscope slide device
Inventors:
David H. Kuntz, Louis Muller
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: Feb 3, 1987
Inventors
David H. Kuntz
Louis Muller
Assignee (at issue)
Davstar Industries, 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.