Abstract
Description
Claims
Drawing
Search report
Cited references
DE148622C
[0004]
[0006]
DE166218C
[0004]
[0007]
DE255173C
[0004]
[0008]
EP2995508A1
[0004]
[0009]
WO2018019540A1
[0004]
[0010]
GB190207793A
[0005]
[0011]
DE121019C
[0005]
[0012]
WO2014140074A1
[0005]
[0013]