1. Egerton Ch 7922 Reference (shelfmark): Egerton Ch 7922 Title: Scope & Content: Inventions: Signet Warrants for patents for inventions: 1717-1725. Robert Eaton, MD: Signet Warrant for inventor's patent to: 1722. Collection Area: Western Manuscripts Languages: English Date Range: 1722 Extent: 1 item