DE300142C - - Google Patents

Info

Publication number
DE300142C
DE300142C DENDAT300142D DE300142DA DE300142C DE 300142 C DE300142 C DE 300142C DE NDAT300142 D DENDAT300142 D DE NDAT300142D DE 300142D A DE300142D A DE 300142DA DE 300142 C DE300142 C DE 300142C
Authority
DE
Germany
Prior art keywords
box
head
cell
cloth
padding
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
DENDAT300142D
Other languages
German (de)
English (en)
Publication of DE300142C publication Critical patent/DE300142C/de
Active legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Helmets And Other Head Coverings (AREA)
DENDAT300142D Active DE300142C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
DE300142C true DE300142C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=554153

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT300142D Active DE300142C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
DE (1) DE300142C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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