Granted Patent
Utility
US 6,719,405 · App. 10/396,623
Inkjet printhead having convex wall bubble chamber
Inventor:
James Harold Powers
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Mar 25, 2003
Inventor
James Harold Powers
Assignee (at issue)
Lexmark International, 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.