Granted Patent
Utility
US 5,938,525 · App. 08/899,345
Air diffuser, and mold and method for its production
Inventors:
John R. Birdsong, Kennon B. Porter
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Jul 23, 1997
Inventors
John R. Birdsong
Kennon B. Porter
Assignee (at issue)
Tompkins 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.