CH51066A
(en )
1911-07-17
Rail bedding in streets with concrete embankments
CH40591A
(en )
1908-08-01
Reinforced concrete railway sleeper
CH37979A
(en )
1907-10-15
Iron-reinforced concrete railway sleeper
CH37985A
(en )
1907-07-15
Reinforced concrete railway sleeper
FR393485A
(en )
1908-12-23
Reinforced concrete sleepers
CH51768A
(en )
1911-09-16
Railway sleeper made of iron-reinforced concrete with rail fasteners
FR402971A
(en )
1909-10-22
Improvements in reinforced concrete constructions
FR417107A
(en )
1910-11-07
Improvements made to reinforced concrete sleepers
ES43329A2
(en )
1908-07-01
A new reinforced cement concrete sleeper for railways and trams with its model to place it.
CH37698A
(en )
1907-07-15
Reinforced concrete railroad tie
AU1809210B
(en )
1910-06-07
Improvements in reinforced concrete railway sleepers
AT41041B
(en )
1910-02-25
Concrete iron sleeper.
CH46533A
(en )
1910-03-16
Construction in molded blocks and reinforced concrete
CH48195A
(en )
1910-09-16
Concrete sleeper for railways
CH55697A
(en )
1912-09-02
Reinforced concrete railway sleeper
CH42841A
(en )
1909-04-16
Reinforcement of the floating rail joint on railway tracks with cross sleepers
CH64874A
(en )
1914-05-01
Hollow railway sleeper made of iron-reinforced concrete
CH40418A
(en )
1908-06-16
Railroad tie made of reinforced cement floor
CH35413A
(en )
1906-08-15
Railway track with a running track embedded in a concrete block
ES40620A1
(en )
1907-06-01
A reinforced cement concrete sleeper for railways and trams with its way of laying it.
CH43701A
(en )
1909-06-01
Reinforced concrete mast
AT44116B
(en )
1910-09-26
Concrete sleeper.
CH59341A
(en )
1913-05-02
Reinforced concrete fence posts
FR14654E
(en )
1912-01-29
Improvement in the laying of railway tracks by means of reinforced concrete sleepers
FR397891A
(en )
1909-05-19
Improvement in the laying of railway tracks by means of reinforced concrete sleepers