Who holds what · as the FAA records the name

Telephonics

Named as the FAA publishes it on its approvals.

Approved to make 1 class of equipment. FAA spelling: Telephonics.

Equipment approvals technical standard order authorisations

2002-04-16TSO-C63A · Airborne Weather Radar Equipment · shockmount, antenna, indicator · instruments and avionics

Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, parts manufacturer approvals, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.