Granted Patent
Utility
US 4,699,118 · App. 06/841,094
Apparatus for dressing cutting edge
Inventors:
Shoji Tsuruta, Hideaki Minami, Yoshinori Ohhata, Shinsuke Sakai
Patented Case
View Patent ↗
Granted: Oct 13, 1987
Filed: Mar 18, 1986
Inventors
Shoji Tsuruta
Hideaki Minami
Yoshinori Ohhata
Shinsuke Sakai
Assignees (at issue)
Mitsubishi Kinzoku Kabushiki Kaisha
Japan Silicon Co., 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.