Granted Patent
Utility
US 6,647,747 · App. 09/685,204
Multifunctional apparatus for manufacturing mineral basalt fibers
Inventor:
Vladimir B. Brik
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Oct 10, 2000
Inventor
Vladimir B. Brik
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.