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
CH37698A
(en )
1907-07-15
Reinforced concrete railroad tie
AT41211B
(en )
1910-02-25
Dowel sleeve for concrete sleepers u. like
CH29375A
(en )
1904-08-15
Reinforced concrete railway sleeper
FR393485A
(en )
1908-12-23
Reinforced concrete sleepers
FR384463A
(en )
1908-04-10
Reinforced concrete railway sleeper
FR389510A
(en )
1908-09-11
Reinforced concrete sleeper for railway tracks
CH40418A
(en )
1908-06-16
Railroad tie made of reinforced cement floor
CH48195A
(en )
1910-09-16
Concrete sleeper for railways
FR375373A
(en )
1907-07-08
Reinforced concrete construction
CH38434A
(en )
1907-10-15
Reinforced concrete sleeper for railroad tracks
AT41041B
(en )
1910-02-25
Concrete iron sleeper.
CH36886A
(en )
1907-03-15
Reinforced concrete beams
ES40620A1
(en )
1907-06-01
A reinforced cement concrete sleeper for railways and trams with its way of laying it.
CH39661A
(en )
1908-04-01
Line mast made of reinforced concrete
CH39662A
(en )
1908-04-01
Line mast made of reinforced concrete
CH39660A
(en )
1908-04-01
Line mast made of reinforced concrete
FR371529A
(en )
1907-03-09
Reinforced concrete sleeper
AT44116B
(en )
1910-09-26
Concrete sleeper.
FR381797A
(en )
1908-01-21
Railroad sleepers
FR383490A
(en )
1908-03-10
Railroad sleepers
CH43701A
(en )
1909-06-01
Reinforced concrete mast
CH51066A
(en )
1911-07-17
Rail bedding in streets with concrete embankments