Ecco il link al brevetto del radio ricevitore e di alcuni dispositivi ad esso collegati:

• http://www.google.com/patents/EP1056192B1?cl=en&dq=ininventor:%22Mark+Anthony+Beach%22&hl=it&sa=X&ei=sh-IUbSFLvL07AaN5YHgAg&ved=0CDYQ6AEwAA

• http://www.google.com/patents/EP0755113A2?cl=en&dq=ininventor:%22Mark+Anthony+Beach%22&hl=it&sa=X&ei=sh-IUbSFLvL07AaN5YHgAg&ved=0CDkQ6AEwAQ

• http://www.google.com/patents/EP1633097B1?cl=en&dq=ininventor:%22Mark+Anthony+Beach%22&hl=it&sa=X&ei=sh-IUbSFLvL07AaN5YHgAg&ved=0CDwQ6AEwAg