United States Patent and Trademark Office OG Notices: 20 January 2004
Requests for Ex Parte Reexamination Filed 6,412,628, Reexam. C.N. 90/006,881, Requested Date: Dec. 08, 2003, Cl. 206/207, Title: APPARATUS FOR PREVENTING THE FORMATION OF METAL TARNISH, Inventor: Walter George Tramposch, Owners of Record: Calgon Corporation, Pittsburgh, PA, Attorney or Agent: Cohen & Grigsby, Pittsburgh, PA, Ex. Gp.: 3728, Requester: Natalie D. Kadievitch, Minneapolis, MN