00518nam a2200193Ia 4500 CTU_109691 210402s9999 xx 000 0 und d 346.730486 G442 Gibbs, Andy Essentials of patents Andy Gibbs, Bob DeMatteis Hoboken, N.J. John Wiley 2003 Inventions,Patents Marketing Q. Hiếu (sửa) Trung tâm Học liệu Trường Đại học Cần Thơ