GB190821075A - Improvements in Switching Apparatus for Interconnecting the Lines of a Telephone Exchange System. - Google Patents

Improvements in Switching Apparatus for Interconnecting the Lines of a Telephone Exchange System.

Info

Publication number
GB190821075A
GB190821075A GB190821075DA GB190821075A GB 190821075 A GB190821075 A GB 190821075A GB 190821075D A GB190821075D A GB 190821075DA GB 190821075 A GB190821075 A GB 190821075A
Authority
GB
United Kingdom
Prior art keywords
interconnecting
lines
exchange system
switching apparatus
telephone exchange
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
John Edward Kingsbury
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 GB190821075A publication Critical patent/GB190821075A/en
Expired legal-status Critical Current

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  • Structure Of Telephone Exchanges (AREA)

Abstract

21,075. Kingsbury, J. E., [Western Electric Co.]. Jan. 3. Drawings to Specification. Switches.-The Specification describes and claims the switch board and selecting-mechanism for automatic and semi-automatic exchange telephone systems described in Specification No. 197, A.D. 1908, but not claimed broadly therein.
GB190821075D 1908-01-03 1908-01-03 Improvements in Switching Apparatus for Interconnecting the Lines of a Telephone Exchange System. Expired GB190821075A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190821075T 1908-01-03

Publications (1)

Publication Number Publication Date
GB190821075A true GB190821075A (en) 1908-12-31

Family

ID=32438997

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190821075D Expired GB190821075A (en) 1908-01-03 1908-01-03 Improvements in Switching Apparatus for Interconnecting the Lines of a Telephone Exchange System.

Country Status (1)

Country Link
GB (1) GB190821075A (en)

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