Official Catchword Index to the third edition (1979) of the International Patent Classification
Official Catchword Index to the third edition (1979) of the International Patent Classification
- 308 S.
15.977, 16.133
Internationale Patentklassifikation
Stichwortindex
Englisch
15.977, 16.133
Internationale Patentklassifikation
Stichwortindex
Englisch