Includes bibliographical references (pages 140-143) and index.
Formatted Contents Note
1. Introduction 2. The First Secret Patent 3. The Secret Patents Act of 1859 4. Towards an Official Secrets Act 5. The Secrets of Two Technical Revolutions 6. Introducing the Examiners 7. Between the Wars 8. The Second World War 9. Making Wartime Procedure Permanent 10. The Last Secret Patent.