Granted Patent
Utility
US 5,687,849 · App. 08/636,429
Test tube cassette for accommodating different tube sizes
Inventors:
David Frank Borenstein, Kyriakos Christou, Nicholas Parker, John K. Sieh
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Apr 23, 1996
Inventors
David Frank Borenstein
Kyriakos Christou
Nicholas Parker
John K. Sieh
Assignee (at issue)
Coulter International Corp.
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.