ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,591, issued on Feb. 3, was assigned to Robert Bosch GmbH (Stuttgart, Germany).
"Hand-held power tool" was invented by Willy Braun (Neustetten, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hand-held power tool, in particular a demolition hammer, includes an outer housing in which an electric motor for actuating an insert tool and an electronic unit for controlling the electric motor are accommodated. The outer housing has an opening into which a first interface module with an electromechanical interface for accommodating an exchangeable, rechargeable battery pack or at least a second interface module with a mains cable can be inserted as d...