000 00428nam a22001097a 4500
008 230529b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
245 _aIndex of trademarks:
_bIssued from the United States patent office 1969
_c/ United States Government Printing Office
260 _aWashington:
_bUnited States Government Printing Office,
_c1970
650 _aIndex
942 _cCR
999 _c64657
_d64657