Granted Patent
Utility
US 6,183,559 · App. 09/237,732
Rotatable coating hopper
Inventors:
James P. Mentone, William R. Millard, David C. De Palma
Patented Case
View Patent ↗
Granted: Feb 6, 2001
Filed: Jan 26, 1999
Inventors
James P. Mentone
William R. Millard
David C. De Palma
Assignee (at issue)
Building Materials Corporation of America
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.