CH256801A
(en )
1948-09-15
Glass set for the production of optical glasses.
CH215895A
(en )
1941-07-31
Process for the production of threads from silica, in particular quartz.
CH214631A
(en )
1941-05-15
Process for the production of diazotypes.
CH232522A
(en )
1944-05-31
Process for the production of diazo visor layers.
CH201230A
(en )
1938-11-30
Method and device for the production of glass threads.
CH221014A
(en )
1942-05-15
Process for the production of sebacic acid.
CH203162A
(en )
1939-02-28
Process for the production of diazotypes.
CH208356A
(en )
1940-01-31
Process for the production of luminous enamel.
CH204635A
(en )
1939-05-15
Process for the production of incandescent lamps with lamp bases made of tempered glass or quartz glass.
CH207059A
(en )
1939-09-30
Process for the manufacture of tempered glass articles.
CH208495A
(en )
1940-02-15
Process for the production of glass melts.
CH203154A
(en )
1939-02-28
Process for the manufacture of mirrors.
AT157112B
(en )
1939-09-25
Process for the production of hydrocarbons.
CH215012A
(en )
1941-05-31
Process for the production of frames for electric incandescent lamps with tempered glass or quartz glass bulbs.
CH205538A
(en )
1939-06-30
Process for the production of copper phthalocyanines.
CH218620A
(en )
1941-12-31
Process for the production of artificial threads.
CH209618A
(en )
1940-04-30
Process for the production of artificial threads.
AT140734B
(en )
1935-02-25
Process for making centerless incandescent lamps and other glass vessels.
CH205157A
(en )
1939-06-15
Process for the production of pure clay.
CH204994A
(en )
1939-05-31
Process for the manufacture of oxide cathodes.
AT160169B
(en )
1941-02-25
Process for the production of canned food.
AT91484B
(en )
1923-02-26
Process for the production of glass tubes with several parallel channels.
CH225762A
(en )
1943-02-28
Process for the production of threads with good performance properties.
ES137742A1
(en )
1935-08-01
Manufacturing process of electric incandescent lamps with several ampoules.
CH228540A
(en )
1943-08-31
Process for the production of glass parts of discharge tubes.