engineering services, namely, providing engineering services in the field of aerolics and fire resistance; technology consultation in the field of computer software for analyzing airflow and fire resistance; engineering in the field of airflow and fire resistance; consulting in the field of engineering, namely, providing engineering evaluations, estimates, and research in the fields of civil engineering, fluid mechanics, materials science, and thermal engineering

Motors and engines, except for land vehicles; engines for air locomotion vehicles, other than for land vehicles; rocket engines, not for land vehicles; reusable rocket engines not for land vehicles; space launch vehicle engine, not for land vehicles; airplane engines; aircraft engines; space vehicle engines, not for land vehicles; propulsion systems and mechanisms and component parts thereof for vehicles except those for land vehicles, namely, rocket engines not for land vehicles, and space v...

Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking and supervision, life-saving and teaching apparatus and instruments, namely, prisms for scientific purposes, weighing machines, optical signaling cables, cameras, radar apparatus, sclerometers, halogen moisture analyzers, potentiometers; magnetic recording media, namely, blank magnetic disks, blank magnetic data carriers; optical and sound recording disks, namely, blank optical di...