TY  - BOOK
AU  - Ardis, Susan
TI  - An introduction to U.S. patent searching : the process / Susan B. Ardis
SN  - 0872878562
AV  - T210/A73 
PY  - 1991///
CY  - Englewood, Colorado
PB  - Libraries Unlimited
KW  - Patentes
N1  - Monografía
ER  -