Company description
Diamond H Company LLC, doing business as Quick 220 Electrical Systems, formed in Arizona in 1994, manufactures and sells equipment that produces 208 to 240 volts from ordinary 110-120 volt outlets. The first model was made available to the public and sold in 1998. In 1999, United States Patent 5,977,658 was issued covering the safety circuit employed within the Quick 220 Power Supply.
