CH79747A
(en )
1919-01-02
Method of making hoes and similar devices
CH82936A
(en )
1919-11-01
Key and method of making the same
CH80791A
(en )
1919-04-16
Structure and method of manufacturing the same
CH78053A
(en )
1918-06-17
Artificial building block and method of making the same
CH79146A
(en )
1918-10-01
Method of making briquettes
CH80786A
(en )
1919-04-01
Method of making masonry
CH78765A
(en )
1918-09-02
Method of making briquettes
CH78530A
(en )
1918-08-01
Method of making aerial embroidery
CH80944A
(en )
1919-09-16
Method of making cords
CH78760A
(en )
1918-12-16
Electric radiator and method of making the same
CH80236A
(en )
1919-02-17
Method of making glue
CH78308A
(en )
1918-07-01
Process and device for the production of dry fuels
CH80255A
(en )
1919-02-17
Method and device for manufacturing horseshoes with studs
CH81318A
(en )
1919-06-02
Process for the production of an acid-resistant and waterproof mass
CH76294A
(en )
1917-11-16
Briquette and method of making the same
CH80633A
(en )
1919-08-01
Process for the preparation of 7-chloroisatin
CH80637A
(en )
1919-08-16
Process for the preparation of 4-7-dimethylisatin
CH80638A
(en )
1919-08-01
Process for the preparation of 5-7-dimethylisatin
CH80641A
(en )
1919-08-16
Process for the preparation of 7-methylisatin
CH81551A
(en )
1919-11-01
Process for the preparation of 4-chloro-7-methylisatin
CH81552A
(en )
1919-11-01
Process for the preparation of 4-methyl-7-chloroisatin
CH81554A
(en )
1919-11-17
Process for the preparation of 5-methyl-7-chloroisatin
CH81555A
(en )
1919-11-17
Process for the preparation of 5-chloro-7-methylisatin
CH81559A
(en )
1919-11-17
Process for the preparation of 4-6-dichloroisatin
CH81561A
(en )
1919-11-17
Process for the preparation of 4-chloro-7-methoxyisatin