The U.S. aircraft register, updated daily
Who holds what · as the FAA records the name

Ametek, INC. A Mark IV Company

Named as the FAA publishes it on its approvals.

Approved to make 4 classes of equipment. FAA spelling: Ametek, Inc. A Mark IV Company.

Equipment approvals technical standard order authorisations

TSO-C52A · Flight Directors · *, *, * · other and general
TSO-C54 · Stall Warning Instruments · *, *, * · instruments and avionics
TSO-C47 · Pressure Instruments - Fuel, Oil, And Hydraulic · *, *, * · heating, ice protection and utility systems
TSO-C9C · Automatic Pilots · *, *, * · other and general

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.