Granted Patent
Utility
US 4,150,666 · App. 05/810,256
Tube holder for blood collection tubes of different sizes
Inventor:
Donald C. Brush
Patented Case
View Patent ↗
Granted: Apr 24, 1979
Filed: Jun 27, 1977
Inventor
Donald C. Brush
Assignee (at issue)
Sherwood Medical Industries 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.