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Heller Rudolf: Adjustable support or stand for an optical observation instrument. Contraves, Kleeman Werner W, June 24, 1975: US3891301 (47 worldwide citation)

An adjustable support for an optical observation instrument, especially a binocular microscope, the position and/or orientation of which can be freely adjusted and fixed within a spatial area, comprising an elongated balance beam supported at its fulcrum on a stationary support by means of two block ...


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Heller Rudolf: Adjustable support or stand for an optical observation instrument. Contraves, October 2, 1973: US3762796 (21 worldwide citation)

An adjustable support or stand for an optical observation instrument, especially for a binocular microscope, the position and/or orientation of which can be freely adjusted and fixed within a desired spatial zone or area, and wherein the observation device is connected through the agency of a three- ...


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