Question: Blackjack Switch is a casino gambling game invented by Geoff Hall, and patented in what year, natural blackjacks are paid 1:1 instead of the standard 3:2, and a dealer hard 22 pushes all player hands except a natural, a croupier or dealer is someone appointed at a gambling table to assist in the conduct of the game, especially in the distribution of bets and payouts?
Sentence (from "Croupier"): Croupiers are typically employed by casinos.
Relevant evidence: No