Disclosures On: Viscous Damped Wind Vane; Nonskid Road Or Runway; Regrooved Pneumatic Tire with Removable Inserts; Devide for Radially Positioning a Rotating Wheel; Method for Fabricating Precision Waveguide Sections; Distortion-cancelling Loudspeaker System; Cryogenic Fluid Density Measurement System; Controlled-atmosphere Weathering Device