Before revision: About ten years after its birth, the last true aerotrim was produced in late 1990, and the patent rights were lost due to lack of interest in keeping them alive.Continuing patent application References "Give Your Wallet a Workout".
After revision: See alsoIndex of aviation articlesAbout ten years after its birth, the last true aerotrim was produced in late 1990, and the patent rights were lost due to lack of interest in keeping them alive.Continuing patent application References "Give Your Wallet a Workout".