Granted Patent
Utility
US 4,263,033 · App. 06/107,301
Method and apparatus for collecting mineral fibers
Inventor:
Jan K. Michalek
Patented Case
View Patent ↗
Granted: Apr 21, 1981
Filed: Dec 26, 1979
Inventor
Jan K. Michalek
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.