"Industrial Property Digital Library". Japan Patent Office. July 26, 2002. Archived from the original on May 7, 2007. Retrieved May 20, 2007. To find the Chrono Brake patent, search "Japanese Trademark Database" for "chronobrake". Click Index to find the result, and click the link.
"Industrial Property Digital Library". Japan Patent Office. July 26, 2002. Archived from the original on May 7, 2007. Retrieved May 20, 2007. To find the Chrono Brake patent, search "Japanese Trademark Database" for "chronobrake". Click Index to find the result, and click the link.