Granted Patent
Utility
US 6,199,297 · App. 09/241,745
Lyophilization apparatus and methods
Inventor:
Richard Wisniewski
Patented Case
View Patent ↗
Granted: Mar 13, 2001
Filed: Feb 1, 1999
Inventor
Richard Wisniewski
Assignee (at issue)
Integrated Biosystems, 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.