FR487423A - Perfectionnements aux équipements des postes téléphoniques - Google Patents

Perfectionnements aux équipements des postes téléphoniques

Info

Publication number
FR487423A
FR487423A FR487423DA FR487423A FR 487423 A FR487423 A FR 487423A FR 487423D A FR487423D A FR 487423DA FR 487423 A FR487423 A FR 487423A
Authority
FR
France
Prior art keywords
telephone set
set equipment
equipment
telephone
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.)
Expired
Application number
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR487423A publication Critical patent/FR487423A/fr
Expired 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
    • H04M1/68—Circuit arrangements for preventing eavesdropping
    • H04M1/70—Lock-out or secrecy arrangements in party-line systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H15/00—Wear-compensating mechanisms, e.g. slack adjusters
    • B61H15/0007—Wear-compensating mechanisms, e.g. slack adjusters mechanical and self-acting in one direction
    • B61H15/0014—Wear-compensating mechanisms, e.g. slack adjusters mechanical and self-acting in one direction by means of linear adjustment
    • B61H15/0021—Wear-compensating mechanisms, e.g. slack adjusters mechanical and self-acting in one direction by means of linear adjustment with cams, by friction or clamping

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
FR487423D 1916-11-10 1917-11-06 Perfectionnements aux équipements des postes téléphoniques Expired FR487423A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US487423XA 1916-11-10 1916-11-10

Publications (1)

Publication Number Publication Date
FR487423A true FR487423A (fr) 1918-07-03

Family

ID=21956209

Family Applications (1)

Application Number Title Priority Date Filing Date
FR487423D Expired FR487423A (fr) 1916-11-10 1917-11-06 Perfectionnements aux équipements des postes téléphoniques

Country Status (2)

Country Link
DE (1) DE487423C (fr)
FR (1) FR487423A (fr)

Also Published As

Publication number Publication date
DE487423C (de) 1929-12-11

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