• Reference
    Z1352/7/3/1
  • Title
    Photocopy of AD 1886 5th August No 10,034 complete specification. John Charles Raymond Okes concerning ‘improvements in hot air engines’ (number 10,034)
  • Date free text
    1886
  • Production date
    From: 1886 To: 1886
  • Reference
  • Level of description
    item