"Patents." . . "Patents Handbooks, manuals, etc." . . "The Inventor's patent handbook"@en . . . "Handbooks and manuals"@en . "Handbooks and manuals" . . "The inventor's Patent Handbook" . . . . . . . . . . . . "The inventor's patent handbook" . "The inventor's patent handbook"@en . . . "Inventeurs Guides, manuels, etc." . . . . "Brevets d'invention Droit." . .