1. Egerton Ch 7837 Reference (shelfmark): Egerton Ch 7837 Title: Scope & Content: Matthew Tyndale, junior: Signet Warrant for inventor's patent to: 1721. John Piper: Signet Warrant for inventor's patent to: 1721. Inventions: Signet Warrants for patents for inventions: 1717-1725. Collection Area: Western Manuscripts Languages: English Date Range: 1721 Extent: 1 item