Dann Dorfman Herrell and Skillman PC

2 registered patent practitioners: 2 patent attorneys and 0 patent agents, Philadelphia, PA.

• John C. Dorfman — Patent attorney, Reg. No. 16703, Dann Dorfman Herrell and Skillman PC
• Patrick J. Hagan — Patent attorney, Reg. No. 27643, Dann Dorfman Herrell and Skillman PC