FR684401A - Improvements to automatic and semi-automatic telephone systems - Google Patents

Improvements to automatic and semi-automatic telephone systems

Info

Publication number
FR684401A
FR684401A FR684401DA FR684401A FR 684401 A FR684401 A FR 684401A FR 684401D A FR684401D A FR 684401DA FR 684401 A FR684401 A FR 684401A
Authority
FR
France
Prior art keywords
automatic
semi
telephone systems
automatic telephone
systems
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
French (fr)
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of FR684401A publication Critical patent/FR684401A/en
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
    • H01H67/12—Linear-motion switches
FR684401D 1928-11-08 1929-11-05 Improvements to automatic and semi-automatic telephone systems Expired FR684401A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE684401X 1928-11-08

Publications (1)

Publication Number Publication Date
FR684401A true FR684401A (en) 1930-06-25

Family

ID=20315012

Family Applications (1)

Application Number Title Priority Date Filing Date
FR684401D Expired FR684401A (en) 1928-11-08 1929-11-05 Improvements to automatic and semi-automatic telephone systems

Country Status (1)

Country Link
FR (1) FR684401A (en)

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