Granted Patent
Utility
US 5,823,671 · App. 08/555,270
Apparatus and method of mixing materials in a sterile environment
Inventors:
Mark E. Mitchell, Philip R. Palin, Daniel Prows
Patented Case
View Patent ↗
Granted: Oct 20, 1998
Filed: Nov 8, 1995
Inventors
Mark E. Mitchell
Philip R. Palin
Daniel Prows
Assignee (at issue)
COLLAGEN 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.