File:Patent 5019838 Fig3.png

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Description

A circular chart recorder.

Source

U.S. patent 5,019,838, figure 3

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current23:43, 3 October 2005Thumbnail for version as of 23:43, 3 October 2005800 × 575 (117 KB)Interiot (talk | contribs)US Patent 5,019,838, figure 3

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