CH42143A
(en )
1909-01-02
Reinforced concrete sleeper for railway tracks
FR388556A
(en )
1908-08-17
Reinforced concrete sleeper for railway tracks
FR10564E
(en )
1909-07-30
Reinforced concrete sleeper for railway tracks
FR389510A
(en )
1908-09-11
Reinforced concrete sleeper for railway tracks
FR399335A
(en )
1909-06-26
Metal sleeper for railway tracks
CH44946A
(en )
1909-10-01
Reinforced concrete sleeper for railways and trams
FR368015A
(en )
1906-11-15
Reinforced cement sleeper for railways
FR371266A
(en )
1907-03-04
Mixed sleeper for railway tracks
CH40292A
(en )
1908-06-16
Reinforced concrete sleeper for railways and trams
CH44306A
(en )
1909-07-16
Reinforced concrete sleeper for railways and trams
FR401184A
(en )
1909-08-20
Metal railway sleeper
FR405922A
(en )
1910-01-17
Crossing for railway tracks
FR348865A
(en )
1905-05-01
Reinforced concrete sleeper for railways
FR427511A
(en )
1911-08-05
Reinforced concrete sleeper for railways
CH49379A
(en )
1911-02-01
Concrete sleeper for railway superstructure
FR371819A
(en )
1907-03-16
Sidero-cement railway sleeper
FR7994E
(en )
1907-12-09
Sidero-cement railway sleeper
FR416608A
(en )
1910-10-25
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
CH38434A
(en )
1907-10-15
Reinforced concrete sleeper for railroad tracks
FR333874A
(en )
1903-12-05
Reinforced cement sleeper for railway tracks
FR404039A
(en )
1909-11-20
Artificial crossing for railway tracks
FR382125A
(en )
1908-01-30
Reinforced cement concrete sleeper ss tem for railways
FR351956A
(en )
1905-07-31
Hollow sleeper in reinforced cement concrete for railway tracks