ALEXANDRIA, Va., May 26 -- United States Patent no. 12,637,154, issued on May 26, was assigned to SLEIPNER GROUP OY (Jyvaskyla, Finland).
"Trailer" was invented by Joona Miettinen (Jyvaskyla, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A trailer includes a frame comprising a front end, a rear end and a vehicle platform for supporting a working machine to be transported on the trailer frame. Wheels support the trailer on a ground surface. At least one loading ramp is attached in an articulated manner to the rear end of the trailer frame by a transverse pivot joint. Each loading ramp is arranged to rest on the ground surface in a loading position for moving the working machine onto the vehicle platf...