Granted Patent
Utility
US 5,891,713 · App. 08/870,339
Cell inoculation device
Inventors:
Lee-Cheng Liu, Timothy Jon Perlman, Catherine A. Doyle
Patented Case
View Patent ↗
Granted: Apr 6, 1999
Filed: Jun 6, 1997
Inventors
Lee-Cheng Liu
Timothy Jon Perlman
Catherine A. Doyle
Assignee (at issue)
W. R. Grace & Co.
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.