Which military product's name became so iconic that the manufacturer had to fight in court to prevent it from becoming a generic term for any similar item?

Military equipment manufacturers have developed some of the most recognized brands in history, with many products becoming household names despite their military origins. These companies often created innovative marketing strategies to win government contracts and later expand into civilian markets. This trivia tests your knowledge of how certain military products gained widespread recognition and became cultural icons beyond their battlefield purposes.

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Jeep (Willys-Overland)
Colt (Samuel Colt's revolvers)
Boeing (aircraft)
Winchester (rifles)