CH175164A
(en )
1935-02-16
Device for treating the skin.
CH116462A
(en )
1926-09-01
Device to facilitate hearing.
CH154075A
(en )
1932-04-30
Device for removing weeds.
CH160978A
(en )
1933-04-15
Device for making plant holes.
SU35176A1
(en )
1934-03-31
Bone extraction apparatus
CH210952A
(en )
1940-08-15
Device for making flycatchers.
CH145398A
(en )
1931-02-28
Device for holding objects.
CH185928A
(en )
1936-08-31
Device for making butter.
CH146793A
(en )
1931-05-15
Device for catching insects.
AT136592B
(en )
1934-02-26
Device for making slotted biscuits.
CH181103A
(en )
1935-11-30
Disinfection method.
CH160131A
(en )
1933-02-28
Device for dividing fruits.
CH160292A
(en )
1933-02-28
Device for removing hair as painlessly as possible.
AT131870B
(en )
1933-02-25
Device for drawing candles.
CH162056A
(en )
1933-06-15
Device for coupling cattle.
CH145573A
(en )
1931-02-28
Device for showing transparent images.
CH167722A
(en )
1934-03-15
Device for making earth pots.
CH148092A
(en )
1931-07-15
Device for salting cheese.
CH128929A
(en )
1928-11-16
Device for receiving mothballs for the purpose of moth control.
FR734420A
(en )
1932-10-21
Filtration apparatus
AT141760B
(en )
1935-05-25
Device for draining liquids.
CH160361A
(en )
1933-03-15
Device for hammering scythes.
CH152937A
(en )
1932-02-29
Device for showing optical sound films.
CH167427A
(en )
1934-02-28
Device for marking ground tracks.
CH152861A
(en )
1932-02-29
Device for churning.