On August 1, 1972, James B. Swett received U.S. Patent No. 3,680,828 on a Mold for Congealable Comestibles:

James Swett was a prolific inventor, designing a large number of consumer products, including this mold:

But the more remarkable thing about this patent is the patent lawyers’ turn of phrase “congealable comestible.” Who doesn’t remember the TV commercials exhorting “There’s always room for congealable comestibles”?