<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/FS/2/10/3" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Correspondence relating to Patents, part 2</dc:title>
  <dc:description>File split into 2 groupings.  File includes index to each individual letter.

Correspondence mostly with the German Patent Office and Meffert &amp; Sell (Patent Lawyers) on patents for a high pressure control valve.  Also the application for registration of the design of the control / check valve and the certificate of registration.</dc:description>
  <dc:date>1924-1930</dc:date>
</rdf:Description>