Granted Patent
Utility
US 6,330,425 · App. 09/558,041
Double-surface printing apparatus
Inventors:
Yoshio Ohuchi, Akira Shimizu, Nobuaki Fukasawa, Michio Sumiyoshi, Satoshi Narita, Kiminori Takada
Patented Case
View Patent ↗
Granted: Dec 11, 2001
Filed: Apr 26, 2000
Inventors
Yoshio Ohuchi
Akira Shimizu
Nobuaki Fukasawa
Michio Sumiyoshi
Satoshi Narita
Kiminori Takada
Assignee (at issue)
HITACHI, 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.