Granted Patent
Utility
US 4,704,297 · App. 06/822,412
Assessing powder coatings
Inventors:
Ian Binns, Brian Neil Makin
Patented Case
View Patent ↗
Granted: Nov 3, 1987
Filed: Dec 31, 1985
Inventors
Ian Binns
Brian Neil Makin
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT CORPORATION
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.