FR678211A
(en )
1930-03-20
Improvements in electron-emitting materials
GR2120B
(en )
1929-01-17
MODIFICATIONS IN MATERIAL REPLACEMENT OF CEMENT, IRON AND WOOD.
GR1838B
(en )
1928-05-17
MATERIAL REPLACEMENT OF CEMENT, IRON AND WOOD.
GR2724B
(en )
1930-04-28
IMPROVEMENT IN MATERIAL REPLACEMENT OF CEMENT, IRON AND WOOD.
SU17694A1
(en )
1930-09-30
Method of making cushioning material
GR1786B
(en )
1928-03-30
BUILDING MATERIAL AND HOW TO BUILD IT.
ES109752A1
(en )
1929-02-01
Improvements in paints, cements, and similar materials.
GR2018B
(en )
1928-10-17
PERFECTIONS IN OR IN RELATION TO THE PRODUCTION OF CONCRETE OR CELLULAR CONCRETE AND SIMILAR MATERIAL.
ES114883A1
(en )
1930-01-01
Improvements in the manufacture of iron planks.
GR2791B
(en )
1930-06-09
METHOD AND ARRANGEMENT FOR THE SUPPLY OF MATERIAL FOR FRYING IN THE ROTATIVE OVENS BY ROAD, FOR THE USE OF CEMENT MATERIALS AND FLOORS.
GR2824B
(en )
1930-07-09
MIXING MACHINE FOR CONCRETE (CONCRETE) AND OTHER BUILDING MATERIAL.
FR677289A
(en )
1930-03-06
Hollow stone in hardening material
ES101961A1
(en )
1927-05-01
Improvements in concrete mixers and similar machines.
ES97233A1
(en )
1926-05-01
Improvements in the manufacture of concrete and similar materials.
ES97289A1
(en )
1926-05-16
Improvements in the manufacture of concrete and similar materials.
FR706044A
(en )
1931-06-17
New artificial materials
DK43437C
(en )
1930-12-01
Combined Crusher and Grinding Machine.
ES97587A1
(en )
1926-06-01
Improvements in the manufacture of natural cement.
ES112260A1
(en )
1929-07-16
Improvements in substitution materials for construction or manufacture of iron and wood.
GR1231B
(en )
1926-07-08
IMPROVEMENTS IN TYPES OF TILES AND BRICKS.
GR248B
(en )
1922-02-28
FINISHING IN AND IN RELATION TO CEMENT AND CONCRETE.
ES113186A1
(en )
1929-07-16
Improvements in the manufacture of shirts for men and analogous.
GR1942B
(en )
1928-08-13
NEW BUILDING MATERIAL.
GR1648B
(en )
1927-10-22
IMPROVEMENTS IN WIRELESS TELEPHONE AND TELEPHONE.
ES116257A1
(en )
1930-01-16
IMPROVEMENTS INTRODUCED IN NEEDLES OR THE LIKE.