BE404564A - - Google Patents

Info

Publication number

BE404564A

BE404564A BE404564DA BE404564A BE 404564 A BE404564 A BE 404564A BE 404564D A BE404564D A BE 404564DA BE 404564 A BE404564 A BE 404564A

Authority

BE

Belgium

Prior art keywords

telephone

recording

electromagnet

coil

cylinder

Prior art date

Links

• Espacenet
• Global Dossier
• Discuss

• 229910000831 Steel Inorganic materials 0.000 claims description 12
• 238000000034 method Methods 0.000 claims description 12
• 239000010959 steel Substances 0.000 claims description 12
• 238000004891 communication Methods 0.000 claims description 11
• 239000004020 conductor Substances 0.000 claims description 10
• 238000006073 displacement reaction Methods 0.000 claims description 4
• 239000000696 magnetic material Substances 0.000 claims description 4
• 230000000694 effects Effects 0.000 claims 2
• 230000005415 magnetization Effects 0.000 claims 1
• 230000003534 oscillatory effect Effects 0.000 claims 1
• 238000010586 diagram Methods 0.000 description 10
• 230000005540 biological transmission Effects 0.000 description 4
• 230000008878 coupling Effects 0.000 description 3
• 238000010168 coupling process Methods 0.000 description 3
• 238000005859 coupling reaction Methods 0.000 description 3
• 239000002184 metal Substances 0.000 description 3
• 229910052751 metal Inorganic materials 0.000 description 3
• 229910001018 Cast iron Inorganic materials 0.000 description 1
• 238000010276 construction Methods 0.000 description 1
• 230000006698 induction Effects 0.000 description 1
• 210000000056 organ Anatomy 0.000 description 1
• 230000013707 sensory perception of sound Effects 0.000 description 1
• 238000004804 winding Methods 0.000 description 1