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An intermittently driven eccentric weight rotary vibrator with matched dual or coaxially concentric weights rotatable relative to each other about a common

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US2876765 * Jul 19, 1955 Mar 10, 1959 Day John W Wall mounted rotary vibrator

Electromagnetic rotary vibrator for a rotary bodyAn apparatus for electromagnetically and rotationally vibrating a rotary body that is supported by bearings

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Rotary vibrator deviceWilliam L RedishCA704568A * Mar 2, 1965 William L Redish Rotary vibrator device

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Pneumatic dual rotary vibratordoi:US2496291 ARie HighUS2496291 * Jan 3, 1947 Feb 7, 1950 Rie High Pneumatic dual rotary vibrator

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