Patent Marking 5. DANVILLE shall apply statutory notice to its air abrasive units sold in the United States substantially as follows: "This unit and its use is protected by one or more of the following U.S. Patents: 5,275,561; 5,330,354; 5,350,299;...Patent License • November 14th, 1997 • American Dental Technologies Inc • Electromedical & electrotherapeutic apparatus • Texas
