Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
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Sherard Osborn Cowper-Coles
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Individual
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Individual
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Publication of GB190714388ApublicationCriticalpatent/GB190714388A/en
14,388. Coles, S. O. Cowper-. June 21. Printing-surfaces.-A soft lead matrix for the production of stereotype, electrotype, and like printing-blocks is obtained by electro-depositing lead upon a sheet of lead or soft lead alloy, and then making an impression thereon.
GB190714388D1907-06-211907-06-21Improvements in the Manufacture of Printing-blocks.
ExpiredGB190714388A
(en)
Improvements in or relating to Means of Attaching Half-tone Process Plates, Fine-line Etchings and the like to the Stereotype Plates of Rotary and other Printing Machines.