ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,535, issued on June 10.

"Ascent and descent of a balloon" was invented by Mohammad Mahdi Mahmoudi (Mashhad, Iran).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for ascending and descending a balloon. The system includes a first car, a first winch, a first cable, a second car, a second winch, a second cable, a memory, and one or more processors. The one or more processors are configured to perform a method, the method comprising ascending and descending the balloon by control movements of the first car, the first winch, the first cable, the second car, and the second winch."

The patent was filed on July 13, 2021, under Application No. 17/37...