ES34676A1 -
An improved process for making half-tone engravings on copper, steel, stone, and other materials for lithography or printing.
- Google Patents
An improved process for making half-tone engravings on copper, steel, stone, and other materials for lithography or printing.
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.)
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Individual
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Individual
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Priority to ES34676ApriorityCriticalpatent/ES34676A1/en
Publication of ES34676A1publicationCriticalpatent/ES34676A1/en
ES34676A1904-09-161904-09-16
An improved process for making half-tone engravings on copper, steel, stone, and other materials for lithography or printing.
ExpiredES34676A1
(en)