US Patent Issued to MA Staircase LLC Paracorp on June 2 for "Portable staircase" (Minnesota Inventor)

ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,337, issued on June 2, was assigned to MA Staircase LLC Paracorp Inc. (Camden, Del.).

"Portable staircase" was invented by Torsten Leines (Maple Grove, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure relates to portable staircases having a staircase assembly including an outer staircase and an inner staircase that can move in a telescoping relationship with respect to the outer staircase. Portable staircases of the disclosure are particularly useful for accessing an oil drilling rig as they are independently supported with respect to the drilling rig, thus providing numerous safety improvements and advantages. Methods of using the...