|
ES2437226A1
|
|
Multi-lane wide gauge with four lanes (Machine-translation by Google Translate, not legally binding)
|
|
ES2452479A2
|
|
Mixed width crossboard with synthetic fasteners for rails
|
|
PT103388A
|
|
Three-carris preferred concrete track or mit bitola
|
|
ES2257197A1
|
|
IMPROVEMENTS INTRODUCED IN THE MANUFACTURE OF CONCRETE CROSSINGS FOR RAILWAY SYSTEMS.
|
|
ES2255785A1
|
|
IMPROVEMENTS INTRODUCED IN THE FIXING SYSTEMS TO THE THREE-RAIL RAILWAY CONCRETE CONCRETE TRAILERS OR MIXED WIDTH.
|
|
ES271505A1
|
|
Improvements in the construction of flexible travies of reinforced concrete for railway (Machine-translation by Google Translate, not legally binding)
|
|
ES249708A1
|
|
Improvements in the devices of extraction of liquids of acequias and similar (Machine-translation by Google Translate, not legally binding)
|
