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

Advance Power, INC.

Named as the FAA publishes it on its approvals.

Approved to make 3 classes of equipment. FAA spelling: Advance Power, Inc..

Equipment approvals technical standard order authorisations

TSO-C49A · Electric Tachometer: Magnetic Drag (For Air Carrier Aircraft) · *, * · other and general
TSO-C49 · Electric Tachometer: Magnetic Drag (For Air Carrier Aircraft) · * · other and general
TSO-C56A · Engine-Driven Direct Current Generators/Starter-Generators · *, *, * · engine

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.