CH82004A
(en )
1919-08-16
Core model for the production of cement concrete pipes
FR512843A
(en )
1921-02-01
Cement mixer
AT91033B
(en )
1923-01-25
Process and machine for the production of reinforced concrete pipes and beams.
CH83080A
(en )
1919-11-17
Process for the production of concrete-reinforced earth brick masonry
CH82935A
(en )
1919-11-01
Device for the production of moldings
FR499979A
(en )
1920-02-27
Non-porous cement
CH83254A
(en )
1919-11-17
Method of making hollow concrete walls
FI8182A
(en )
1920-09-10
Fertilization for the production of asbestos-cement concrete
FR507725A
(en )
1920-09-22
Reinforced cement posts
FR534627A
(en )
1922-03-29
Cement brick
CH88567A
(en )
1921-03-01
Process for the production of trinitroresorzin.
AU186521A
(en )
1922-01-24
A mould for use inthe manufacture of cement concrete posts
FR536102A
(en )
1922-04-26
Process for the manufacture of reinforced concrete sleepers and other equivalents
ES71752A1
(en )
1920-03-01
Core for molds of cement pieces.
FR524363A
(en )
1921-09-02
Process for the production of artificial limestone
CA207041A
(en )
1920-12-28
Method of manufacturing concrete ships
FR501821A
(en )
1920-04-27
Reinforced concrete slabs
FR559011A
(en )
1923-09-08
Process and installation for the manufacture of cement
FR527871A
(en )
1921-11-03
Method and apparatus for the manufacture of portland cement
FR502656A
(en )
1920-05-22
Concrete constructions
CA195037A
(en )
1919-12-16
Concrete mould
AT98692B
(en )
1924-12-10
Process for the production of a mortar former from anhydrite.
FR21382E
(en )
1920-09-11
Reinforced cement construction
FR510451A
(en )
1920-12-06
Cement mixer
FR688315A
(en )
1930-08-21
Composition for the production of plasters