Simple tech terms

This is a super-category enclosing a variety of plain language terms for early aero technologies which will help search and classify. Parallel formal systems include the CPC system, the very similar IPC system, the USPC system, and the historical French patent classifications and German patent classifications.

Enclosing categories	Techtypes
Subcategories	Airfoil, Aerial railway, Aircraft, Anchor, Airplane, Aerial road, Aero-hydraulic engine, Aeroplane, Aeroport logistics, Aerial observation, Aiming, Aerial navigation, Aerodynamics, Agriculture, Advertising, Airship, Aerial communication, Aerostat, Aero-hydrostatic motor, Aerial traction, Automobiles, Balloon train, Beacon, Basket, Ballistics, Balloons, Bombing, Biplane, Braking, Communications, Device control, Dyeing, Military, Lighting, Frame, Time-keeping, Monoplane, Vehicle construction, Sail, Ladder, Ejection seat, Fabric, Rockets, Electronics, Hydrogen, Windscreens, Flapping, Gas pressure, Training, Piloting, Safety, Velocipede, Suspension, Track, Streamlining, Visibility, Parachutes, Projectile, Steam propulsion, Recreation, Wings, Rescue, Wheels, Ventilation, Takeoff, Remote navigation, Texture, Torpedo, Precision, Storage, Logistics, Spectacle, Repair, Rudder, Protection, Ornithopter, Portable, Orthopter, Mooring, Landing, Launching, Motors, Metallurgy, Hybrid, Inflation, Illumination, Hydroplane, Fueling, Entertainment, Hunting, Internal combustion, Hangars, Ignition, Infrastructure, Industry, Fun, Chaining, Ground structures, Gas valve, Helicopter, Elevation, Gyroscope, Gauge, Fire escape, Engine, Chassis, Energy, Construction, Covering, Car, Cockpit, Commerce, Clutch, Cargo, Wing warping
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