Can I mention Groucho Marx in a book I've written?
In Trademark Ownership - updated on 5/17/2017
I am a new as yet unpublished author and I am wondering if I can mention Groucho, Rufus T. Firefly, and "Hello, I must be going" in my book. It involves my fictional detective talking his way into the office of my bad guy. He introduces himself to a secretary as Rufus T. Firefly and gets in. When he's discovered by an FBI agent, the agent throws him out, calling him Groucho. As the detective leaves, he says to the secretary, "Hello, I must be going." Is this an infringement of any kind?