Patent:GB190612959

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Brevetto:GB 190612959
Titolo:Novel or Improved Device for use in Extending a Length of Piping Downwards, such as Adding a Length of Air Pipe during Sinking Operations i
Data:14.02.1907
Luogo:
Nazione:Gran Bretagna
Persona:Haydock, Richard (P), Lewis, Robert David (P)
Ditta:
Link interni:
Keywords:
Link al brevetto:
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 GB190612959 (http://v3.espacenet.com/textdoc?DB=EPODOC&F=0&IDX=GB190612959)


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Ultima modifica il 17:45, 6. Nov 2007.