TY  - GEN
AU  - Oppedahl, Carl.
AU  - Polson, Margaret L.
CN  - KF3120
ID  - 27127
KW  - Patent practice
KW  - Drawings
KW  - Patents
KW  - Trademarks
KW  - Patents
LA  - eng
SN  - 9780984408436
T1  - The United States Patent and Trademark Office's Guide for preparation of patent drawings /
TI  - The United States Patent and Trademark Office's Guide for preparation of patent drawings /
ER  -