DE92730C - - Google Patents

Info

Publication number
DE92730C
DE92730C DENDAT92730D DE92730DA DE92730C DE 92730 C DE92730 C DE 92730C DE NDAT92730 D DENDAT92730 D DE NDAT92730D DE 92730D A DE92730D A DE 92730DA DE 92730 C DE92730 C DE 92730C
Authority
DE
Germany
Prior art keywords
rollers
microphone
contact
coal
solid material
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
Application number
DENDAT92730D
Other languages
German (de)
English (en)
Publication of DE92730C publication Critical patent/DE92730C/de
Active legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
DENDAT92730D Active DE92730C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE92730C true DE92730C (enrdf_load_stackoverflow)

Family

ID=364223

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT92730D Active DE92730C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE92730C (enrdf_load_stackoverflow)

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