Granted Patent
Utility
US 6,200,380 · App. 09/249,886
Method for continuous production for wallboard tape joint compound
Inventors:
Ronald S. Finkelstein, Jashbhai M. Patel
Patented Case
View Patent ↗
Granted: Mar 13, 2001
Filed: Feb 16, 1999
Inventors
Ronald S. Finkelstein
Jashbhai M. Patel
Assignee (at issue)
National Gypsum Company
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.