000 00536nam a22001697a 4500
008 230310b |||||||| |||| 00| 0 eng d
020 _a92-805-0795-8
040 _aNational Science Library
_cNational Science Library
080 _aD 025.4PATENt N9
245 _aInternational patent classification
_c/ WIPO
260 _aGeneva:
_bWIPO,
_c1999
490 _a7th ed.
500 _3Vol. 5 (Section E: Fixed constructions); ISBN: 92-805-0795-8; 79p.
650 _aLibrary science
653 _aPatent classification
942 _2udc
_cBK
999 _c7477
_d7477