000			00592nam a22002057c 4500
001			10131
003			OSt
005			20190814091106.0
007			t|
008			190702s1971 xxu||||| |||| 00| 0 d
110	1		_aUnited States Patent Office <Washington>
245	0	0	_aConcordance : _bUnited States Patent Classification to International Patent Classification
250			_a2. ed., Nov. 1971
264		1	_aWashington, _c1971
300			_a197 S.
650			_aInternationale Patentklassifikation _92098
650			_aPatentklassen _93467
650			_aUSA _94716
650			_aKonkordanz _92389
999			_c6202 _d6202