Holding that "light" and "lite" are generic adjectives for beer and opining that "[o]therwise a manufacturer could remove a common descriptive word from the public domain by investing his goods with an additional quality, thus gaining the exclusive right to call his wine `rose,' his whisky `blended,' or his bread `white'"
Holding that 1–888–M–A–T–T–R–E–S–S “immediately conveys the impressions that a service relating to mattresses is available by calling the telephone number”