00680cam a22002291  4500001001300000003000400013005001700017008004100034010001700075035001900092040005000111042001200161050001700173100003000190245006700220260004900287300003500336650001200371650001700383650003300400999001700433po 29000247 DLC20260227111858.0810615s1850    maua          000 0 eng c  apo 29000247   a(OCoLC)7502204  aU.S. Patent Office LibrarycODaWUdOCoLCdDLC  apremarc00aTL544b.S5441 aSheldon, William,d-1871.10aAerial navigation and the patent laws.cBy William Sheldon ...  aBoston,bThurston, Torrey, & Company,c1850.  a46 p.billus., diagrs.c24 cm. 0aFlight. 0aAeronautics. 0aPatent laws and legislation.  c51659d51659