CH80791A
(en )
1919-04-16
Structure and method of manufacturing the same
CH82936A
(en )
1919-11-01
Key and method of making the same
CH78053A
(en )
1918-06-17
Artificial building block and method of making the same
CH79747A
(en )
1919-01-02
Method of making hoes and similar devices
CH76294A
(en )
1917-11-16
Briquette and method of making the same
CH72196A
(en )
1916-04-17
Hyperbolic wheel and method of making the same
CH75814A
(en )
1917-09-17
Mast and method of making the same
CH81318A
(en )
1919-06-02
Process for the production of an acid-resistant and waterproof mass
CH78760A
(en )
1918-12-16
Electric radiator and method of making the same
CH78971A
(en )
1918-09-16
Process for the production of spur and helical gears
CH80944A
(en )
1919-09-16
Method of making cords
CH80786A
(en )
1919-04-01
Method of making masonry
CH72805A
(en )
1916-07-01
Firelighter and method of making the same
CH78523A
(en )
1918-08-01
Brush and method of making it
CH79146A
(en )
1918-10-01
Method of making briquettes
CH78308A
(en )
1918-07-01
Process and device for the production of dry fuels
CH80792A
(en )
1919-04-01
Firestone and method of making the same
CH78054A
(en )
1918-10-01
Reinforced concrete stairs and method of making the same
CH80810A
(en )
1919-04-16
Process for the manufacture of locking pins
CH80901A
(en )
1919-04-16
Process for the production of hollow bodies and hollow bodies produced by this method
AT76380B
(en )
1919-05-10
Process and system for the production of pre-doughs.
CH79491A
(en )
1918-12-02
Process for the production of copper oxide
AT87482B
(en )
1922-02-25
Process for the production of asbestos slate and the like.
CH78104A
(en )
1918-10-16
Process for the production of mercury oxide
CH78689A
(en )
1918-08-16
Headed studs and process for their manufacture