Hydrodynamic fishing lure
Hydrodynamic fishing sinker
Hydrodynamic plane for downrigger fishing
Hydrodynamic trawl opening device
Hydrofoil trawl door
Hydrogen out venting electronic package
Hydrogen peroxide in basic solution to clean polycrystalline sil
Hydrogen plasma passivation of GaAs
Hydrogen reduction method for removing contaminants in a semicon
Hydrogenation of photoresponsive semiconductor devices
Hydromechanical bait trap
Hydroplaning airborne fishing device
Hydropneumatic harpoon