• Country
• Austria

• Manufacturer / Brand
• Ingelen, Elektrotechnische Fabrik Ing. Ludwig Neumann GmbH; Wien

• Year
• 1960 ??

• Category
• Medical Technology

• Radiomuseum.org ID
• 310784

• • Brand: Elektrot.Fabrik Ludwig Neumann

• Number of Transistors
• 4

• Semiconductors
• OC70 OC71 OC71 OC71

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Hearing aid

• Power type and voltage
• Dry Batteries

• Loudspeaker
• - only for Earphone!

• Material
• Metal case

• from Radiomuseum.org
• Model: Laryngophon Hörgerät 410 D - Ingelen, Elektrotechnische

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 40 x 60 x 15 mm / 1.6 x 2.4 x 0.6 inch

• Author
• Model page created by Roberto Gabba. See "Data change" for further contributors.

• Other Models

• Here you find 448 models, 398 with images and 322 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ingelen, Elektrotechnische Fabrik Ing. Ludwig Neumann GmbH; Wien