Granted Patent
Utility
US 4,952,373 · App. 07/341,757
Liquid shield for cartridge
Inventors:
Jeff Sugarman, Ian D. Harding, Michael E. Cobb
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Apr 21, 1989
Inventors
Jeff Sugarman
Ian D. Harding
Michael E. Cobb
Assignee (at issue)
Biotrack, LLC
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.