TY  - GEN
T1  - Use of patents in the agricultural machinery industry /
AU  - Johnson, I. M.,
VL  - 1990 No 29 pages 7-35
ID  - 2782
KW  - Patents.
KW  - Intellectual property.
KW  - PATENTS : PATENTABILITY : SCIENTIFIC AND TECHNICAL PROGRESS, RESEARCH AND DEVELOPMENT
TI  - Use of patents in the agricultural machinery industry /
ER  -