Granted Patent
Utility
US 6,779,548 · App. 10/290,007
Chemical injection system and method
Inventor:
Leonard McKeary
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Nov 6, 2002
Inventor
Leonard McKeary
Assignee (at issue)
Cody Liners Ltd.
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.