G02C 3/00
Querverweise
Informative Querverweise
Gläser dafür
G02C 7/00
Brillen- oder Monokelhalterungen an Spazierstöcken
A45B 3/00
G02C 3/00
References
Informative references
Lenses therefor
G02C 7/00
Lens assemblies or monocles supported by walking-sticks
A45B 3/00