Granted Patent
Utility
US 5,295,017 · App. 07/937,328
Sample masking using wavelength-selective material
Inventor:
David C. Brown
Patented Case
View Patent ↗
Granted: Mar 15, 1994
Filed: Aug 27, 1992
Inventor
David C. Brown
Assignee (at issue)
Bio-Rad 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.