ALEXANDRIA, Va., April 15 -- United States Patent no. 12,600,047, issued on April 14, was assigned to RITESAFETY PRODUCTS INTERNATIONAL LLC (De Pere, Wis.).
"Safety knife" was invented by Melvin Freedman (Highland Park, Ill.) and Thomas Landwehr (De Pere, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A safety knife with a knife body 10 with a cavity and an opening at a front end, a trigger mechanism operable outside the body 10 including a trigger slide 22 located in the cavity and slidable from a rear position to a front position. A blade holder 32 for securely holding a blade 31, located in the cavity and movable from a safety position, where the blade 31 is completely within the body 10. The blade 3...