GR1576B
(en )
1927-08-11
METHOD OF MANUFACTURE OF HARD TILES OR TALK AND ITS INDUSTRIALIZATION UNDER VARIOUS FORM.
GR1429B
(en )
1927-02-10
NEW METHOD OF WOOD MAKING.
GR2511B
(en )
1929-11-15
METHOD OF MANUFACTURE OF EMERALS AND SIMILAR.
ES84468A3
(en )
1923-05-16
Procedure for making blocks and other building elements.
FR648426A
(en )
1928-12-10
Advanced drills and their manufacture
NL23343C
(en )
1931-01-15
MINERAL TANNING METHOD
GR1692B
(en )
1927-12-14
METHOD OF PREPARATION OF ORIGINAL OIL.
GR672B
(en )
1924-05-17
METHOD OF CONSTRUCTION OF BEARING SURFACES.
GR1374B
(en )
1926-12-30
METHOD FOR THE MANUFACTURE OF PERPOSE BUILDING MATERIALS.
ES85028A1
(en )
1923-06-16
Counter-model used in the manufacture of the tiles.
GR2283B
(en )
1929-05-02
METHOD OF MANUFACTURING ARTIFICIAL MARBLES AND PAINTING TILES, WITHOUT MECHANICAL INSTALLATIONS.
ES106301A1
(en )
1928-04-01
An improvement in the manufacture of tiles and ceramics in general.
CH122398A
(en )
1927-09-16
Electrode and method of making the same.
SU17148A1
(en )
1930-09-30
The method of enrichment of coal
GR1644B
(en )
1927-10-21
METHOD FOR THE PREPARATION OF GYALKALIA AND MAGNESIUM CYANAMIDS.
GR2630B
(en )
1930-02-11
METHOD OF MANUFACTURING THIN CANDLES AND CANDLES.
GR1231B
(en )
1926-07-08
IMPROVEMENTS IN TYPES OF TILES AND BRICKS.
ES103369A1
(en )
1927-08-01
Method to produce porous materials and insulating porous materials obtained by the same method.
ES90767A1
(en )
1924-11-01
Improvements in the structures of the concrete and metal sleepers.
GR1802B
(en )
1928-04-19
METHOD FOR THE PRODUCTION OF TYPOGRAPHIC PLATES AND SIMILAR.
GR1590B
(en )
1927-08-25
METHOD OF INCREASING CONTENT AS PERFOSPHORUS.
GR1370B
(en )
1926-12-21
METHOD BY - VIEWING - PHOTOGRAPHY.
GR2276B
(en )
1929-04-23
METHOD AND ORGANIZATION OF IRROGATION.
ES81698A1
(en )
1922-10-16
Procedure for the construction of horizontal and inclined floors.
CH131529A
(en )
1929-02-28
Process for making ceilings and floors soundproof.