Granted Patent
Utility
US 6,531,321 · App. 09/662,960
Blood control and system for erythrocyte sedimentation measurement
Inventors:
Wayne L. Ryan, Bradford A. Hunsley
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Sep 15, 2000
Inventors
Wayne L. Ryan
Bradford A. Hunsley
Assignee (at issue)
Streck Laboratories, 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.