Granted Patent
Utility
US 6,604,815 · App. 10/065,106
Ink jet recording apparatus utilizing printhead cartridges with asymmetrical contacts
Inventors:
Chih-Ching Chen, Tsung-Wei Huang
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: Sep 18, 2002
Inventors
Chih-Ching Chen
Tsung-Wei Huang
Assignee (at issue)
BenQ Corporation
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.