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The longest a patent in the US can last is 20 years. According to Wikipedia the 386 was released in 1985, and '89 for the 486. Therefore any patents should ha
by stonemetal 12y ago
The longest a patent in the US can last is 20 years. According to Wikipedia the 386 was released in 1985, and '89 for the 486. Therefore any patents should have expired by now unless they applied for the patents years after release of the related product.