GB190904630A - Improvements in the Construction of Telephone and Switchboard Lamp Jacks. - Google Patents

Improvements in the Construction of Telephone and Switchboard Lamp Jacks.

Info

Publication number
GB190904630A
GB190904630A GB190904630DA GB190904630A GB 190904630 A GB190904630 A GB 190904630A GB 190904630D A GB190904630D A GB 190904630DA GB 190904630 A GB190904630 A GB 190904630A
Authority
GB
United Kingdom
Prior art keywords
telephone
construction
switchboard
switchboard lamp
lamp jacks
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
Inventor
Merritt Scott Conner
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 GB190904630A publication Critical patent/GB190904630A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Structure Of Telephone Exchanges (AREA)

Abstract

4630. Conner, M. S. Feb. 25. Drawings to Specification. Plug-boards.-Telephone and switchboard lamp jack frames are constructed of sheet metal. The out-ide walls of the frame may be bent and cut out of one or two sheets. Sheet-metal partitions separate the lamps.
GB190904630D 1909-02-25 1909-02-25 Improvements in the Construction of Telephone and Switchboard Lamp Jacks. Expired GB190904630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190904630T 1909-02-25

Publications (1)

Publication Number Publication Date
GB190904630A true GB190904630A (en) 1909-10-28

Family

ID=32490371

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190904630D Expired GB190904630A (en) 1909-02-25 1909-02-25 Improvements in the Construction of Telephone and Switchboard Lamp Jacks.

Country Status (1)

Country Link
GB (1) GB190904630A (en)

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