Official Catchword Index to the fourth edition (1984) of the International Patent Classification
Official Catchword Index to the fourth edition (1984) of the International Patent Classification
- 335 S.
18.579, 18.806, 18.811
Internationale Patentklassifikation
Stichwortindex
Englisch
18.579, 18.806, 18.811
Internationale Patentklassifikation
Stichwortindex
Englisch