Granted Patent
Utility
US 6,179,018 · App. 08/931,424
Apparatus and improved method for changing automatic transmission fluid in motor vehicles
Inventors:
Harold E. Erwin, Michael Jason Erwin, Craig James Dittmar
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Sep 16, 1997
Inventors
Harold E. Erwin
Michael Jason Erwin
Craig James Dittmar
Assignee (at issue)
BG PRODUCTS, 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.