Granted Patent
Utility
US 6,042,655 · App. 09/009,207
Cylinder cleaning method
Inventors:
Akira Hara, Hiraku Onuma, Takashi Ichihara
Patented Case
View Patent ↗
Granted: Mar 28, 2000
Filed: Jan 20, 1998
Inventors
Akira Hara
Hiraku Onuma
Takashi Ichihara
Assignee (at issue)
Baldwin-Japan 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.