00330nam a2200121Ia 450000500170000008000180001710000230003524500680005825000090012626000370013530000170017258300190018920260716043050.0  a04.01.02 W582  aWhite, Blanco T.A.  aPatents for inventions and the protection of industrial designs  a4 ed  bStevens and sonsaLondonGBc1974  alxix, 749 p.  c3/7/00kM2LMGR