CH51768A
(en )
1911-09-16
Railway sleeper made of iron-reinforced concrete with rail fasteners
CH64874A
(en )
1914-05-01
Hollow railway sleeper made of iron-reinforced concrete
CH40591A
(en )
1908-08-01
Reinforced concrete railway sleeper
CH37979A
(en )
1907-10-15
Iron-reinforced concrete railway sleeper
CH55697A
(en )
1912-09-02
Reinforced concrete railway sleeper
FR434539A
(en )
1912-02-06
Improvements to concrete sleepers for railway tracks
CH48195A
(en )
1910-09-16
Concrete sleeper for railways
CH72601A
(en )
1916-06-02
Reinforced concrete railway sleeper
DK15809C
(en )
1912-04-01
Railway sleeper of reinforced concrete.
AU1077613B
(en )
1915-06-08
Combined reinforced concrete sleeper and rail tie
CH61354A
(en )
1913-09-16
Reinforced concrete sleeper for the superstructure of trams and other railways
CH51066A
(en )
1911-07-17
Rail bedding in streets with concrete embankments
FR431574A
(en )
1911-11-14
Reinforced cement railway sleepers
FR421450A
(en )
1911-02-22
Cement railway sleeper
AU1938410B
(en )
1911-02-28
Improvement ina method of making beton or concrete sleepers with resilient rail supports
CH37985A
(en )
1907-07-15
Reinforced concrete railway sleeper
DK17158C
(en )
1913-04-07
Procedure for Fastening Rail Rails or Rail Chairs to Concrete sleepers.
FR418951A
(en )
1910-12-23
Railroad sleepers
CH42841A
(en )
1909-04-16
Reinforcement of the floating rail joint on railway tracks with cross sleepers
CH49379A
(en )
1911-02-01
Concrete sleeper for railway superstructure
FR457175A
(en )
1913-09-13
Reinforced concrete railway sleeper
CH71670A
(en )
1916-02-01
Reinforced concrete sleeper for rails
AU1077613A
(en )
1915-06-08
Combined reinforced concrete sleeper and rail tie
FR433819A
(en )
1912-01-17
Reinforced concrete sleeper
FR427122A
(en )
1911-07-27
Reinforced concrete sleeper