ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,449, issued on March 31, was assigned to YAMAZAKI MAZAK Corp. (Niwa-gun, Japan).
"Laser working machine and method for maintaining laser working machine" was invented by Tomohisa Nakayama (Niwa-gun, Japan), Satoshi Sasaki (Niwa-gun, Japan) and Tetsuichi Kitamoto (Niwa-gun, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A laser working machine includes a first slot provided at another end portion of a first body. In the first slot, either one of a first shielding plate and a first light transmissive plate is selectively insertable in a sealed manner. The first shielding plate is configured to block a first optical path. The first light transmi...