Granted Patent
Utility
US 4,664,004 · App. 06/731,687
Constant-volume sample cutter
Inventor:
Leslie L. Randall
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: May 8, 1985
Inventor
Leslie L. Randall
Assignee (at issue)
Monsanto 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.