FR869078A - Telephone system - Google Patents

Telephone system

Info

Publication number
FR869078A
FR869078A FR869078DA FR869078A FR 869078 A FR869078 A FR 869078A FR 869078D A FR869078D A FR 869078DA FR 869078 A FR869078 A FR 869078A
Authority
FR
France
Prior art keywords
telephone system
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR869078A publication Critical patent/FR869078A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Relay Circuits (AREA)
  • Interface Circuits In Exchanges (AREA)
FR869078D 1939-11-02 1941-01-09 Telephone system Expired FR869078A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US302521A US2237419A (en) 1939-11-02 1939-11-02 Telephone system

Publications (1)

Publication Number Publication Date
FR869078A true FR869078A (en) 1942-01-23

Family

ID=23168093

Family Applications (1)

Application Number Title Priority Date Filing Date
FR869078D Expired FR869078A (en) 1939-11-02 1941-01-09 Telephone system

Country Status (4)

Country Link
US (1) US2237419A (en)
FR (1) FR869078A (en)
GB (1) GB543718A (en)
NL (1) NL69630C (en)

Also Published As

Publication number Publication date
US2237419A (en) 1941-04-08
GB543718A (en) 1942-03-10
NL69630C (en)

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