Patents for inventions; abridgements intended to serve as guides to specifications. (class 104 (1))
Railway and tramway crossings and points and switches
1929
34 pages
Miscellaneous
English
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Railway and tramway crossings and points and switches
Engineering Index Backfile | 1926
Engineering Index Backfile | 1929
Switch machine for railway and tramway switches or the like
European Patent Office | 2017
|Optimisation of railway switches and crossings
TIBKAT | 2014
|Optimisation of railway switches and crossings
Tema Archive | 2014
|