首页>
外文OA文献
>Specification of a patent for an improvement in the cap used as a substitute for flyers in Dansforth's spinning machine. Granted to Joseph Ripka, Manayunk, Philadelphia county, July 31, 1833
【2h】
Specification of a patent for an improvement in the cap used as a substitute for flyers in Dansforth's spinning machine. Granted to Joseph Ripka, Manayunk, Philadelphia county, July 31, 1833