Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
AU155538B2 - Improvements in automatic telephone systems - Google Patents
[go: Go Back, main page]

AU155538B2 - Improvements in automatic telephone systems - Google Patents

Improvements in automatic telephone systems

Info

Publication number
AU155538B2
AU155538B2 AU7762/52A AU776252A AU155538B2 AU 155538 B2 AU155538 B2 AU 155538B2 AU 7762/52 A AU7762/52 A AU 7762/52A AU 776252 A AU776252 A AU 776252A AU 155538 B2 AU155538 B2 AU 155538B2
Authority
AU
Australia
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
AU7762/52A
Other versions
AU776252A (en
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.)
General Electric Co
Original Assignee
General Electric Co
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of AU776252A publication Critical patent/AU776252A/en
Publication of AU155538B2 publication Critical patent/AU155538B2/en
Expired legal-status Critical Current

Links

AU7762/52A 1952-02-01 Improvements in automatic telephone systems Expired AU155538B2 (en)

Publications (2)

Publication Number Publication Date
AU776252A AU776252A (en) 1952-04-03
AU155538B2 true AU155538B2 (en) 1952-04-03

Family

ID=

Similar Documents

Publication Publication Date Title
AU155538B2 (en) Improvements in automatic telephone systems
AU776252A (en) Improvements in automatic telephone systems
CA489269A (en) Automatic telephone systems
AU162405B2 (en) Improvements in automatic and semiautomatic telephone systems
AU165026B2 (en) Improvements in automatic telephone systems
AU155579B2 (en) Improvement in automatic potential-control system
AU160933B2 (en) Improvements in automatic telephone systems
AU1037652A (en) Improvements in automatic and semiautomatic telephone systems
AU165843B2 (en) Improvements in supervisory arrangements for telephone systems
AU1219652A (en) Improvement in automatic potential-control system
CA497870A (en) Automatic switches as used in telephone systems
CA497871A (en) Automatic switches as used in telephone systems
AU162494B2 (en) Improvements relating to automatic telephone and like selective systems
IE22117L (en) Automatic telephone systems
AU655151A (en) Improvements in automatic telephone systems
CA492958A (en) Automatic switches of the type used in telephone systems
AU202560B2 (en) Improvements in automatic telephone systems
CA498132A (en) Automatic switches of the kind used in telephone systems
CA496610A (en) Automatic telephone systems
CA490689A (en) Automatic telephone systems
CA493919A (en) Automatic telephone systems
CA494877A (en) Automatic telephone systems
CA497640A (en) Automatic telephone systems
CA513766A (en) Automatic telephone systems
CA514583A (en) Automatic telephone systems