FR496014A
(en )
1919-10-24
Construction process for masonry structures
CH80789A
(en )
1919-04-01
Construction process for masonry structures
FR538804A
(en )
1922-05-15
Process for the production of urea
FR526090A
(en )
1921-10-01
Building construction process
FR511896A
(en )
1921-01-06
Quarry exploitation process
FR500080A
(en )
1920-03-02
Construction process for a slab roof
FR514026A
(en )
1921-03-01
Waterproofing process
FR529596A
(en )
1921-12-01
Wall construction process
FR538663A
(en )
1922-06-13
Process for the construction of partitions
FR519503A
(en )
1921-06-11
Process for the construction of small houses
FR496013A
(en )
1919-10-24
Formwork wall construction process
FR21671E
(en )
1921-01-11
Formwork wall construction process
FR526261A
(en )
1921-10-06
Brick
CH81730A
(en )
1919-07-01
Brick
FR512655A
(en )
1921-01-28
Method for the direct synthesis of ammonia
FR533176A
(en )
1922-02-23
Process for the manufacture of cokemetallurgical
FR495418A
(en )
1919-10-08
Construction process for reinforced cement structures
FR497817A
(en )
1919-12-18
Process for the establishment of reinforced concrete constructions
FR507414A
(en )
1920-09-15
Building brick
FR25788E
(en )
1923-05-18
Method of economical construction of walls by the more rational application of solid or hollow brick
CH83447A
(en )
1919-12-01
Hollow brick masonry
FR505553A
(en )
1920-08-02
Construction process for double reinforced concrete ceilings
FR520089A
(en )
1921-06-20
Process for the production of explosives
FR509753A
(en )
1920-11-19
Method and devices for the construction of concrete walls
FR511655A
(en )
1920-12-31
Construction process of a reinforced insulating floor