CH49379A
(en )
1911-02-01
Concrete sleeper for railway superstructure
CH48195A
(en )
1910-09-16
Concrete sleeper for railways
CH40591A
(en )
1908-08-01
Reinforced concrete railway sleeper
CH38434A
(en )
1907-10-15
Reinforced concrete sleeper for railroad tracks
FR418951A
(en )
1910-12-23
Railroad sleepers
CH50917A
(en )
1911-07-17
Rail pad for wooden railway sleepers
CH42143A
(en )
1909-01-02
Reinforced concrete sleeper for railway tracks
FR389510A
(en )
1908-09-11
Reinforced concrete sleeper for railway tracks
FR10564E
(en )
1909-07-30
Reinforced concrete sleeper for railway tracks
FR416608A
(en )
1910-10-25
Reinforced concrete railway sleeper
FR388556A
(en )
1908-08-17
Reinforced concrete sleeper for railway tracks
FR440532A
(en )
1912-07-12
Railroad track
FR403109A
(en )
1909-10-26
Ribbed rail for railway tracks
FR434539A
(en )
1912-02-06
Improvements to concrete sleepers for railway tracks
CH55697A
(en )
1912-09-02
Reinforced concrete railway sleeper
CH61354A
(en )
1913-09-16
Reinforced concrete sleeper for the superstructure of trams and other railways
FR434496A
(en )
1912-02-03
Monolithic superstructure for railway tracks
DK12038C
(en )
1909-04-13
Railway sleeper.
FR434467A
(en )
1912-02-03
Railroad sleeper superstructure
FR405922A
(en )
1910-01-17
Crossing for railway tracks
FR422072A
(en )
1911-03-11
Rail joint for railways
CH45081A
(en )
1909-10-16
Coupling for railroad cars
FR409256A
(en )
1910-04-18
Infrastructure for tram rails
FR399335A
(en )
1909-06-26
Metal sleeper for railway tracks
CH36122A
(en )
1906-12-15
Railway sleeper drill