FireDOC Search

displaying 1 - 1 results in total 1

• Scheidweiler, A.; Thalmann, H.
  view article (1.0)

  Ionization-Type Fire Sensor.
  Cerberus AG, Mannedorf, Switzerland
  U.S. Patent 3,909,813
  U.S. Patent 3,909,813
  September 30, 1975
  7 p.