FR699364A
(en )
1931-02-13
Mold intended for the manufacture of cylindrical pipes in compressed cement concrete
FR625555A
(en )
1927-08-13
Improvements in the manufacture of cement concrete and apparatus used to prepare it
FR40725E
(en )
1932-08-22
Mold intended for the manufacture of cylindrical pipes in compressed cement concrete
FR647015A
(en )
1928-11-19
Mold for the manufacture of cement pipes
FR677172A
(en )
1930-03-05
Metal mold system for manufacturing cement pipes
FR691411A
(en )
1930-10-21
Compressed Cement Concrete Cylindrical Pipe Making Machine
FR701291A
(en )
1931-03-13
Compressed Cement Concrete Cylindrical Pipe Making Machine
FR667109A
(en )
1929-10-12
Cement tile imitating mozaic and apparatus for its manufacture
FR619754A
(en )
1927-04-08
Pneumatic process for the manufacture of poles, pipes and other building materials, in concrete or reinforced concrete
FR653463A
(en )
1929-03-21
Mold for making cement pipes
FR665719A
(en )
1929-09-23
Mold for the manufacture of frames in cement or artificial stone
FR655501A
(en )
1929-04-19
Mixer for the manufacture of cement, mortar, concrete and other materials
FR670518A
(en )
1929-11-29
Cement concrete pipe
FR628717A
(en )
1927-10-28
Reinforced cement truss truss
FR770743A
(en )
1934-09-20
Improvements in the manufacture of concrete or cement blocks for the construction of buildings
FR714253A
(en )
1931-11-10
Further training in the manufacture of cement-based pipes
FR594209A
(en )
1925-09-08
Improvements in the manufacture of cement or hydraulic plaster with gypsum
FR685067A
(en )
1930-07-04
Cement mortar manufacturing process
FR540921A
(en )
1922-07-19
New overturning mold intended for the manufacture of hollow, solid and ribbed cement concrete blocks
FR618232A
(en )
1927-03-05
Improvements in cement manufacturing
FR774869A
(en )
1934-12-15
Improvements in the manufacture of portland cement
FR778420A
(en )
1935-03-15
Improvements in the manufacture of portland cement
FR639444A
(en )
1928-06-21
Process for the manufacture of concrete pipes and especially pipes with a central core between two reinforced linings
FR692324A
(en )
1930-11-04
Advanced cement pipe machine
FR38205E
(en )
1931-04-24
Advanced cement pipe machine