Church's 1821 Press

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1. Specification, As Presented in the London Journal of Arts and Sciences

The London Journal of Arts and Sciences, [original series], Vol. 3 (1822): 57.

2. Specification, As Abridged in 1959

1859 Abridgments, pp. 154-155 (Google PDF pp. 175-176). GB Patent No. 4,565 of 1821-07-03. "An Improved Apparatus for Printing" (a printing press).

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