John R. Beighley

CPI International LLC engages in the provision of scientific solutions to the laboratory community. Its products include analytical instrument supplies, microbiological testing, and semiconductor. The company was founded on November 24, 2010 and is headquartered in Santa Rosa, CA.

Communications & Power Industries LLC manufactures components to generate microwave frequency signals. It provides microwave, radio frequency, power and control solutions for critical defense, communications, medical, scientific and other applications. The firm develops, manufactures and distributes products used to generate, amplify, transmit and receive high-power/high-frequency microwave and radio frequency signals and/or provide power and control for various applications. The company was founded by Russell H. Varian and Sigurd F. Varian in 1948 and is headquartered in Palo Alto, CA.

Varian Medical Systems, Inc. engages in the manufacture of medical devices and software for treating cancer and other medical conditions. It operates through the Oncology Systems and Proton Solutions segments. The Oncology Systems segment designs, manufactures, sells, and services hardware and software products for treating cancer with conventional radiation therapy, and advanced treatments. The Proton Solutions segment delivers proton therapy, a form of external beam radiotherapy using proton beams for the treatment of cancer. The company was founded by William Hansen, Edward Ginzton, Russell Varian, and Sigurd Varian in 1948 and is headquartered in Palo Alto, CA.

CPI International Holding Corp. develops, manufactures, and distributes microwave, radio frequency, power, and control products. The company is headquartered in Palo Alto, CA.

Part of CPI International LLC, Communications & Power Industries Europe Ltd. is a British company that manufactures and wholesales broadband, microwave, and related electronic components. The company is based in Weybridge, UK.