Patent:GB190612959

Patent:	GB 190612959
Titel:	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
Datum:	14.02.1907
Ort:
Land:	Großbritannien
Person:	Haydock, Richard (P), Lewis, Robert David (P)
Firma:
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Aus der Patentschrift GB190612959

DATUM: 14.02.1907
TITEL: Novel or Improved Device for use in Extending a Length of Piping Downwards, such as Adding a Length of Air Pipe during Sinking Operations in a Shaft.
PERSON: LEWIS ROBERT DAVID

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