Wenderoth, Lind & Ponack, L.L.P.
Article and engraving method
An engraved code includes a plurality of dot dented portions defined on an article. The engraved code includes an opening peripheral edge portion of each of the dot dented portions which has a polygonal or quadrilateral shape. This configuration leads to detection of each dot dented portion as a polygonal or quadrilateral dot.
HITACHI AUTOMOTIVE SYSTEMS, LTD.
B F B B B B G G G B B F B B B
B23K F16D B23K B23K B23K B23K G06K G06K G06K B23K B23K F16D B23K B23K B23K
additional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional additional inventional additional inventional
Kazushi Toshiyuki Yasushi Kokichi Takashi
Imamura Take Suzuki Nakayama Murakami