• Reference
    SP7/2/33
  • Title
    S. H. Donnelly - ‘improved apparatus for inserting ferrules . . . in gas and water mains under pressure . . .’ typescript copy, with plan, section and elevation, and photograph (number 10335)
  • Date free text
    1908
  • Production date
    From: 1908 To: 1908
  • Level of description
    item