Granted Patent
Utility
US 6,719,448 · App. 10/172,298
Method and apparatus for the simultaneous production of differently characterized extrudates
Inventors:
Paul Tedman, Bobbie W. Hauck
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Jun 13, 2002
Inventors
Paul Tedman
Bobbie W. Hauck
Assignee (at issue)
Wenger Manufacturing Inc.
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.