David Stelzer – Trademark Portfolio

David Stelzer has filed 9 trademarks with the United States Patent and Trademark Office (USPTO). Filing records span from 2008 to 2011, covering 2 years of intellectual property practice. The portfolio covers 6 Nice Classification classes, with the highest concentration in Class 9 (Computers & Electronics, 3 filings) and Class 41 (Education & Entertainment, 3 filings).