000 00467nam a22001217a 4500
008 230529b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
080 _a608.6(083.86)(73)
245 _aIndex of trademarks:
_bIssued from the United States patent office 1967
_c/ United States Government Printing Office
260 _aWashington:
_bUnited States Government Printing Office,
_c1968
650 _aIndex
942 _cCR
_2udc
999 _c64651
_d64651