TY  - GEN
CN  - U.S. Dept. of Commerce
CN  - T223
CY  - [Washington, D.C.] :
ID  - 434404
KW  - Patents
LK  - http://purl.access.gpo.gov/GPO/LPS69299
LK  - http://catalog.hathitrust.org/api/volumes/oclc/4010459.html
N1  - Description based on: 1980.
N1  - Latest issue consulted: Dec. 1999.
N1  - Description based on print version record.
PB  - U.S. Dept. of Commerce, Patent and Trademark Office :
PB  - [Supt. of Docs., U.S. G.P.O., distributor
PP  - [Washington, D.C.] :
T1  - Index to the U.S. patent classification
TI  - Index to the U.S. patent classification
UR  - http://purl.access.gpo.gov/GPO/LPS69299
UR  - http://catalog.hathitrust.org/api/volumes/oclc/4010459.html
ER  -