Granted Patent
Utility
US 5,216,809 · App. 07/546,919
Acoustic muffler with one-piece housing
Inventors:
James R. Abbott, Benny J. Snider
Patented Case
View Patent ↗
Granted: Jun 8, 1993
Filed: Jul 2, 1990
Inventors
James R. Abbott
Benny J. Snider
Assignee (at issue)
Tennessee Gas Pipeline Company
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.