Granted Patent
Utility
US 5,403,721 · App. 08/051,569
Precipitate test for microorganisms
Inventors:
N. Robert Ward, John Desrosier, Elliott D. Marshall, III, Judith Ford, Nancy J. S. Mallinak
Patented Case
View Patent ↗
Granted: Apr 4, 1995
Filed: Apr 21, 1993
Inventors
N. Robert Ward
John Desrosier
Elliott D. Marshall, III
Judith Ford
Nancy J. S. Mallinak
Assignee (at issue)
BIOCONTROL SYSTEMS, 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.