What is the generic name of Wayfarers?

I need to know the word that specifically describes this style of sunglasses:

http://www.aaajs.com/wp-content/uploads/wayfarers1...

Is "Wayfarers" copyrighted by Ray Ban or can it also be used to describe generic brands of the same style?

I have tried googling to find an answer with no luck.

Thanks.

2 Answers

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