DE285492C - - Google Patents

Info

Publication number

DE285492C

DE285492C DENDAT285492D DE285492DA DE285492C DE 285492 C DE285492 C DE 285492C DE NDAT285492 D DENDAT285492 D DE NDAT285492D DE 285492D A DE285492D A DE 285492DA DE 285492 C DE285492 C DE 285492C

Authority

DE

Germany

Prior art keywords

recording

telephone

microphone

circuit

telephone relay

Prior art date

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Active

Links

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• 230000008878 coupling Effects 0.000 claims 1
• 238000010168 coupling process Methods 0.000 claims 1
• 238000005859 coupling reaction Methods 0.000 claims 1
• 239000012528 membrane Substances 0.000 description 6
• 230000003321 amplification Effects 0.000 description 3
• 238000003199 nucleic acid amplification method Methods 0.000 description 3
• ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
• 239000003990 capacitor Substances 0.000 description 2
• 238000010276 construction Methods 0.000 description 1
• 230000006735 deficit Effects 0.000 description 1