GR2579B
(en )
1929-12-20
METHOD AND INSTALLATION FOR GRASTING CEMENT AND SIMILAR SUBSTANCES.
FR646442A
(en )
1928-11-12
Cement mixer
GR2227B
(en )
1929-03-20
METHOD FOR THE CONSTRUCTION OF BITUMINOUS SOLID ROADS, RAILWAY BUILDINGS AND THE like.
FR673203A
(en )
1930-01-13
Advanced concrete mixer
DK42531C
(en )
1930-07-07
Stone and Pipe Conveyor for Brickworks.
GR2276B
(en )
1929-04-23
METHOD AND ORGANIZATION OF IRROGATION.
GR2422B
(en )
1929-08-21
MINING METHODS AND DEVICES.
DK43610C
(en )
1931-01-19
Transport device for ready-mixed concrete.
DK41555C
(en )
1930-01-27
Gravel spreading apparatus.
GR2511B
(en )
1929-11-15
METHOD OF MANUFACTURE OF EMERALS AND SIMILAR.
ES116036A1
(en )
1930-03-16
Concrete blocks
GR1491B
(en )
1927-05-03
IRON FOR IRONIC CONCRETE AND METHOD FOR MAKING IT.
GR1188B
(en )
1926-05-24
MIXING METHOD BY MORTAR METER AND MORTARS.
CH145414A
(en )
1931-02-28
Note gate.
GR1374B
(en )
1926-12-30
METHOD FOR THE MANUFACTURE OF PERPOSE BUILDING MATERIALS.
CH131540A
(en )
1929-02-28
Concrete mixer.
DK39162C
(en )
1928-08-27
Method for making an asphalt-like coating for roads or the like.
GR2356B
(en )
1929-07-05
ROAD COATING METHOD.
CH138267A
(en )
1930-02-28
Cement mixer.
ES102875A1
(en )
1927-07-01
Multiple-poled concrete device.
ES116172A1
(en )
1930-04-01
Procedure for the construction of miradors or galleries in reinforced concrete pieces.
GR2558B
(en )
1929-12-09
SYSTEM AND APPARATUS FOR VLINOGRAPHY VIRUS PREVENTION.
CH136587A
(en )
1929-11-30
Pounding apparatus.
ES105447A1
(en )
1928-02-01
Apparatus for the rapid preparation of concrete stakes or similar.
DK38631C
(en )
1928-04-02
Concrete mixer.