Patent attorneys and agents in Elm Grove, WI

5 USPTO-registered patent practitioners: 3 patent attorneys and 2 patent agents.

• Donald J. Ersler — Patent attorney, Reg. No. 38753, Donald J. Ersler, S.C.
• Ethel R. Machi — Patent agent, Reg. No. 67482
• Isabel M. Mcnamara — Patent agent, Reg. No. 82566
• Donald Edwin Porter — Patent attorney, Reg. No. 20597
• Galo I. Vargas — Patent attorney, Reg. No. 53717, S.C. Johnson & Son, Inc.