机读格式显示(MARC)

• 000 00757nam a2200229 a 4500

• 001 0000320908

• 005 20191002105600.0

• 008 070910s1971 dcu i 000 0 eng

• 020 __ |c CNY1.80

• 040 __ |a CAU |c CAU

• 050 00 |a T223

• 090 __ |a N18-7/MC:2

• 093 __ |a N18-7 |2 5

• 245 00 |a Supplement to the manual of classification.

• 246 30 |a Manual of classification

• 260 __ |a Washington : |b U.S. Dept. of Commerce, Patent Office, |c 1971.

• 300 __ |a 1 v. ; |c 27 cm.

• 500 __ |a "Supplements Manual of classification, issued by the United States Patent Office".

• 500 __ |a "A United States Department of Commerce Publication".

• 650 _0 |a Patents |z United States |v Classification.

• 710 1_ |a United States. |b Patent Office.

• 920 __ |a 211180 |z 1