ALEXANDRIA, Va., July 23 -- United States Patent no. 12,365,459, issued on July 22.

"Transportable dip tank" was invented by Walt Dorn (Simi Valley, Calif.) and William Ward (Simi Valley, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mobile, portable, transportable dip tank to support wildfire fighting operations for both aerial firefighting, as well as ground support functionality. The dip tank includes the ability to be loaded in any orientation on to a transport vehicle, store onboard tools and includes an interior cistern that can be attached to water sources on the ground to continuously fill the cistern. An auto-fill/auto-regulating valve is incorporated into the still-well of the cistern in ...