Granted Patent
Utility
US 6,539,999 · App. 09/788,915
Apparatus and method for making variable paint roller covers
Inventors:
Bruce C. Polzin, Lawrence J. Bower
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Feb 19, 2001
Inventors
Bruce C. Polzin
Lawrence J. Bower
Assignee (at issue)
Newell Operating Co.
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.