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., by David Robbins et al.

Title:	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.
Author:	Robbins, David
Author:	Englert, Alvin J.
Author:	United States. National Bureau of Standards
Note:	U.S. Dept. of Commerce, National Bureau of Standards ;, 1970

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Subject:	Scientific apparatus and instruments
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