Historical Document · 1935

US Patent 2,013,603: Plotting and Computing Device (Philip Dalton)

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Dalton's 1933 plotting and computing device: a compass plate over a rotating grid, for one-handed drift problems; granted 3 September 1935.

Author

Philip Dalton

Year

1935

Type

Historical Document

Credit

US Patent and Trademark Office; via Google Patents.

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