1. Egerton Ch 7592 Reference (shelfmark): Egerton Ch 7592 Title: Scope & Content: Inventions: Signet Warrants for patents for inventions: 1717-1725. John Aplebie, inventor: Signet Warrant for inventor's patent to: 1718. Collection Area: Western Manuscripts Languages: English Date Range: 1718 Extent: 1 item