FR512489A - Perfectionnement aux installations de téléphonie automatique - Google Patents

Perfectionnement aux installations de téléphonie automatique

Info

Publication number
FR512489A
FR512489A FR512489A FR512489DA FR512489A FR 512489 A FR512489 A FR 512489A FR 512489 A FR512489 A FR 512489A FR 512489D A FR512489D A FR 512489DA FR 512489 A FR512489 A FR 512489A
Authority
FR
France
Prior art keywords
further training
automatic telephone
telephone installations
installations
automatic
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
FR512489A
Other languages
English (en)
Inventor
Albert Lambot
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR512489A publication Critical patent/FR512489A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/02—Multi-position wiper switches
    • H01H67/04—Multi-position wiper switches having wipers movable only in one direction for purpose of selection
    • H01H67/06—Rotary switches, i.e. having angularly movable wipers
FR512489A 1919-04-05 1920-03-27 Perfectionnement aux installations de téléphonie automatique Expired FR512489A (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BE93128X 1919-04-05
BE140419X 1919-04-14
GB10258/20A GB165971A (en) 1919-04-05 1920-04-13 Improvements in automatic telephone and the like systems

Publications (1)

Publication Number Publication Date
FR512489A true FR512489A (fr) 1921-01-24

Family

ID=9964538

Family Applications (1)

Application Number Title Priority Date Filing Date
FR512489A Expired FR512489A (fr) 1919-04-05 1920-03-27 Perfectionnement aux installations de téléphonie automatique

Country Status (3)

Country Link
CH (1) CH93128A (fr)
FR (1) FR512489A (fr)
GB (1) GB165971A (fr)

Also Published As

Publication number Publication date
GB165971A (en) 1921-07-13
CH93128A (fr) 1922-03-01

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