Granted Patent
Utility
US 5,690,814 · App. 08/597,109
Spin-on filter with transparent container portion
Inventor:
Earl Thomas Holt
Patented Case
View Patent ↗
Granted: Nov 25, 1997
Filed: Feb 6, 1996
Inventor
Earl Thomas Holt
Assignee (at issue)
DANA LIMITED
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.