Granted Patent
Utility
US 4,284,725 · App. 05/714,072
Virus titration and identification system
Inventors:
Robert H. Fennel, III, Robert W. McKinney
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Aug 13, 1976
Inventors
Robert H. Fennel, III
Robert W. McKinney
Assignee (at issue)
Dynasciences Corporation
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.