Granted Patent
Utility
US 5,014,561 · App. 07/359,849
Method and apparatus for obtaining accurate sample
Inventors:
Richard A. Falk, Larry Janicsek, Joseph J. Boron, James Colzani
Patented Case
View Patent ↗
Granted: May 14, 1991
Filed: May 31, 1989
Inventors
Richard A. Falk
Larry Janicsek
Joseph J. Boron
James Colzani
Assignee (at issue)
MIDWEST INSTRUMENT COMPANY
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.