Halloween has spooky overtones, even in the USPTO. Take for instance U.S. Patent No. 727371 from 1903 on a Jack-O-Lantern Helmet:

Political correctness aside, who is going out with a candle on their head? U.S. Patent No. 838938 from 1907 on a Toy Lantern, also has trick-or-treaters carrying around a lit candle:

Hopefully, the Pyrotechnic Novelty of U.S. Patent No. 1,099,548, from 1914 is safer than it sounds:

Finally, in 1935 Irving Rollins brought some safety to Halloween with a Halloween lantern with a battery operated lamp (U.S. Patent No. 2,006,251):