Who holds what · as the FAA records the name

Db Systems, INC.

Named as the FAA publishes it on its approvals.

Approved to make 3 classes of equipment. FAA spelling: dB Systems, Inc..

Equipment approvals technical standard order authorisations

2002-07-17TSO-C50c · AUDIO SELECTOR PANELS AND AMPLIFIERS · *, *, * · cabin, seats and restraints

2001-01-15TSO-C105 · Optional Display Equipment For Weather And Ground Mapping Radar Indicators · * · instruments and avionics

TSO-C50B · Aircraft Audio And Interphone Amplifiers · * · 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.