Granted Patent
Utility
US 6,290,596 · App. 09/376,128
Air diffuser, and mold and method for its production
Inventors:
John R. Birdsong, Kennon B. Porter
Patented Case
View Patent ↗
Granted: Sep 18, 2001
Filed: Aug 17, 1999
Inventors
John R. Birdsong
Kennon B. Porter
Assignee (at issue)
Tomkins Industries, 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.