Granted Patent
Utility
US 5,584,653 · App. 08/548,294
Device for reducing the generation of noise in fans
Inventors:
Erich Frank, Fritz Mohring
Patented Case
View Patent ↗
Granted: Dec 17, 1996
Filed: Nov 1, 1995
Inventors
Erich Frank
Fritz Mohring
Assignee (at issue)
J. Eberspacher
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.