Inventions, patents and monopoly /
Meinhardt, Peter.
Inventions, patents and monopoly / Peter Meinhardt; with a foreword by James Mould. - [1ª ed.]. - London : Stevens & Sons, 1946. - XVI, 352 p. ; 22 cm.
Inventions, patents and monopoly / Peter Meinhardt; with a foreword by James Mould. - [1ª ed.]. - London : Stevens & Sons, 1946. - XVI, 352 p. ; 22 cm.
