FR978921A - Improvements in telecommunications devices - Google Patents

Improvements in telecommunications devices

Info

Publication number
FR978921A
FR978921A FR978921DA FR978921A FR 978921 A FR978921 A FR 978921A FR 978921D A FR978921D A FR 978921DA FR 978921 A FR978921 A FR 978921A
Authority
FR
France
Prior art keywords
telecommunications devices
telecommunications
devices
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)
Inventor
Richard Mercer
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 filed Critical
Application granted granted Critical
Publication of FR978921A publication Critical patent/FR978921A/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
    • H01H67/22—Switches without multi-position wipers
    • H01H67/26—Co-ordinate-type selector switches not having relays at cross-points but involving mechanical movement, e.g. cross-bar switch, code-bar switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/22—Switches without multi-position wipers
FR978921D 1948-01-16 1949-01-13 Improvements in telecommunications devices Expired FR978921A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB978921X 1948-01-16

Publications (1)

Publication Number Publication Date
FR978921A true FR978921A (en) 1951-04-19

Family

ID=10824693

Family Applications (1)

Application Number Title Priority Date Filing Date
FR978921D Expired FR978921A (en) 1948-01-16 1949-01-13 Improvements in telecommunications devices

Country Status (1)

Country Link
FR (1) FR978921A (en)

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