Granted Patent
Utility
US 4,701,303 · App. 06/863,332
Odor-fading prevention from organosulfur-odorized liquefied petroleum gas
Inventor:
Ashley D. Nevers
Patented Case
View Patent ↗
Granted: Oct 20, 1987
Filed: May 15, 1986
Inventor
Ashley D. Nevers
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.