FR2350015A1 - Silencieux pour telephones - Google Patents

Silencieux pour telephones

Info

Publication number
FR2350015A1
FR2350015A1 FR7712617A FR7712617A FR2350015A1 FR 2350015 A1 FR2350015 A1 FR 2350015A1 FR 7712617 A FR7712617 A FR 7712617A FR 7712617 A FR7712617 A FR 7712617A FR 2350015 A1 FR2350015 A1 FR 2350015A1
Authority
FR
France
Prior art keywords
handset
secret
ambient noise
noise levels
fitting
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.)
Withdrawn
Application number
FR7712617A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LORENZANA Y de la PEZUELA JUAN
Original Assignee
LORENZANA Y de la PEZUELA JUAN
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LORENZANA Y de la PEZUELA JUAN filed Critical LORENZANA Y de la PEZUELA JUAN
Publication of FR2350015A1 publication Critical patent/FR2350015A1/fr
Withdrawn legal-status Critical Current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)
  • Telephone Set Structure (AREA)
FR7712617A 1976-04-27 1977-04-26 Silencieux pour telephones Withdrawn FR2350015A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES1976220552U ES220552Y (es) 1976-04-27 1976-04-27 Dispositivo silenciador aplicable a telefonos.

Publications (1)

Publication Number Publication Date
FR2350015A1 true FR2350015A1 (fr) 1977-11-25

Family

ID=8383316

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7712617A Withdrawn FR2350015A1 (fr) 1976-04-27 1977-04-26 Silencieux pour telephones

Country Status (2)

Country Link
ES (1) ES220552Y (fr)
FR (1) FR2350015A1 (fr)

Also Published As

Publication number Publication date
ES220552U (es) 1976-10-01
ES220552Y (es) 1977-02-16

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Legal Events

Date Code Title Description
ST Notification of lapse