Granted Patent
Utility
US 6,170,505 · App. 09/370,042
Automotive-fluid replacement apparatus
Inventor:
Harold E. Erwin
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Aug 6, 1999
Inventor
Harold E. Erwin
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.