Granted Patent
Utility
US 6,604,881 · App. 09/847,047
Applicator head
Inventors:
David J. Ruha, Steven E. Thompson
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: May 1, 2001
Inventors
David J. Ruha
Steven E. Thompson
Assignee (at issue)
Warner Manufacturing 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.