Possible Clues:

• Cutter of infomercials
• Kind of knife of infomercial fame
• Knife brand originally called Quikut
• Big name in infomercial knives
• Sharp brand
• Brand of knives touted in classic infomercials
• 'As Seen on TV' knife brand
• Infomercial knife name
• Kind of knife in old infomercials
• Kitchen knife brand