Reference number
  • LAN/6/157
Alternative reference number
  • 1919-135301
Level
  • Item
Date
  • ?
Description
  • Refers to patents 1895-15045 (LAN/6/19), 1896-13960 (LAN/6/26) and 1898-10836 (LAN/6/40); two parallel crank shafts, rotating in opposite directions, geared by spur gears, rotating at the same speed.