Olympia de Mendonca Cortez; Eliza de Menezes, GB130820A

Improvements in the Manufacture and Printing of Maps in Relief.

On August 14, 1919, Olympia de Mendonca Cortez and Eliza de Menezes, two spinsters of Lisbon, patented a faster, more economical way to make raised-relief maps. Their method printed the whole map first, then embossed it all at once over a layered die, using grouped contour pieces and durable electrotypes to speed production.

Date of Application: 5 September 1918

Date of Issuance: 14 August 1919

For more information, please refer to the following webpage:

• Espacenet