Melter, Craig H. and Charles S. Ramsey. "Trimming Scissors and Sheath Assembly." U. S. Patent number: 5297343. Washington, DC: United States Patent and Trademark Office, 1994. http://www.uspto.gov/patft/index.html (10 July 2007).

Melter, Craig H. and Charles S. Ramsey. "Trimming Scissors and Sheath Assembly." U. S. Patent number: 5297343. Washington, DC: United States Patent and Trademark Office, 1994. http://www.uspto.gov/patft/index.html (10 July 2007).