ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,921, issued on July 29.

"Interchangeable pole support and device attachment system" was invented by Mark Dorn (Knoxville, Tenn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mast elevation system including support mounts configured to be removably attachable and interchangeable to various mounting members, a telescopic mast unit having quick-change attachment components configured to removably and interchangeably secure the telescopic mast unit to the various support mounts, the telescopic mast unit having a second end with a receptacle thereon to removably and interchangeably receive various utility devices, and an actuation unit configured to r...