ALEXANDRIA, Va., June 4 -- United States Patent no. 12,318,912, issued on June 3.

"System and method for inspecting and maintaining the exterior elevated elements of building structures" was invented by Omidreza Ghanadiof (Los Angeles), Amirhossein Ghanadiof (Esfahan, Iran) and Majid Ghanadiof (Esfahan, Iran).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of inspecting a balcony identifies an area of the balcony where there is no access to pass a crawler robot from the outside of the balcony into the interior space of the balcony, drills a hole into the interior space of the balcony, passes the crawler robot that includes a humidity sensor through the hole into the interior space of the balcony. The ...