Granted Patent
Utility
US 5,321,942 · App. 07/982,910
Method and apparatus for directing conditioned air to a spinning machine
Inventor:
Roy Hartness
Patented Case
View Patent ↗
Granted: Jun 21, 1994
Filed: Nov 30, 1992
Inventor
Roy Hartness
Assignee (at issue)
Pneumafil Corporation
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.