FR42840E - Improvements to automatic telephone systems - Google Patents

Improvements to automatic telephone systems

Info

Publication number
FR42840E
FR42840E FR42840DA FR42840E FR 42840 E FR42840 E FR 42840E FR 42840D A FR42840D A FR 42840DA FR 42840 E FR42840 E FR 42840E
Authority
FR
France
Prior art keywords
telephone systems
automatic telephone
automatic
systems
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
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.)
Compagnie des Telephones Thomson Houston
Original Assignee
Compagnie des Telephones Thomson Houston
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 des Telephones Thomson Houston filed Critical Compagnie des Telephones Thomson Houston
Application granted granted Critical
Publication of FR42840E publication Critical patent/FR42840E/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
    • H01H67/14—Multi-position wiper switches having wipers movable in two mutually perpendicular directions for purpose of selection
    • H01H67/16—Multi-position wiper switches having wipers movable in two mutually perpendicular directions for purpose of selection one motion being rotary and the other being parallel to the axis of rotation, e.g. Strowger or "up and around" switches
FR42840D 1931-12-14 1932-12-29 Improvements to automatic telephone systems Expired FR42840E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US746140XA 1931-12-14 1931-12-14

Publications (1)

Publication Number Publication Date
FR42840E true FR42840E (en) 1933-11-04

Family

ID=22120541

Family Applications (2)

Application Number Title Priority Date Filing Date
FR746140D Expired FR746140A (en) 1931-12-14 1932-11-21 Improvements to automatic telephone systems
FR42840D Expired FR42840E (en) 1931-12-14 1932-12-29 Improvements to automatic telephone systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR746140D Expired FR746140A (en) 1931-12-14 1932-11-21 Improvements to automatic telephone systems

Country Status (1)

Country Link
FR (2) FR746140A (en)

Also Published As

Publication number Publication date
FR746140A (en) 1933-05-23

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