000 00289 a2200121 4500
082 _a608.773
_bUn3h
245 1 _aHOW TO OBTAIN INFORMATION FROM UNITED STATES PATENTS
260 _aWashington
_b
_c1962
300 _a21
650 _aPatents -- U. S
964 _gCIRC
997 _a72659 C
999 _c456088
_d456088