Granted Patent
Utility
US 6,331,435 · App. 09/415,667
Erythrocyte sedimentation rate control
Inventor:
Wayne R. Hengstenberg
Patented Case
View Patent ↗
Granted: Dec 18, 2001
Filed: Oct 12, 1999
Inventor
Wayne R. Hengstenberg
Assignees (at issue)
Streak Laboratories, Inc.
Hematronix, 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.