TY  - GEN
T1  - A graphical representation of the problem-solution approach (PSA) to the assessment of inventive step /
AU  - Stellmach, J.a.,
VL  - OMPI 15 Mar 2009 Vol. 31 No.1, pages 4-10
ID  - 24970
KW  - Patents.
KW  - Inventive step
KW  - Patent applications
TI  - A graphical representation of the problem-solution approach (PSA) to the assessment of inventive step /
ER  -