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
AU219622B2 - Improvements in control arrangements for telephone systems - Google Patents
[go: Go Back, main page]

AU219622B2 - Improvements in control arrangements for telephone systems - Google Patents

Improvements in control arrangements for telephone systems

Info

Publication number
AU219622B2
AU219622B2 AU32375/57A AU3237557A AU219622B2 AU 219622 B2 AU219622 B2 AU 219622B2 AU 32375/57 A AU32375/57 A AU 32375/57A AU 3237557 A AU3237557 A AU 3237557A AU 219622 B2 AU219622 B2 AU 219622B2
Authority
AU
Australia
Prior art keywords
telephone systems
control arrangements
arrangements
control
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
AU32375/57A
Other versions
AU3237557A (en
Inventor
Frederick Denby and James Gordon Pearce James
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Filing date
Publication date
Application filed by Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Application granted granted Critical
Publication of AU219622B2 publication Critical patent/AU219622B2/en
Publication of AU3237557A publication Critical patent/AU3237557A/en
Expired legal-status Critical Current

Links

AU32375/57A 1957-10-24 Improvements in control arrangements for telephone systems Expired AU219622B2 (en)

Publications (2)

Publication Number Publication Date
AU219622B2 true AU219622B2 (en) 1958-04-24
AU3237557A AU3237557A (en) 1958-04-24

Family

ID=

Similar Documents

Publication Publication Date Title
AU219622B2 (en) Improvements in control arrangements for telephone systems
AU3237557A (en) Improvements in control arrangements for telephone systems
CA540296A (en) Common control arrangement in telephone systems
AU219945B2 (en) Improvements in telephone systems
AU217337B2 (en) Improvements in telephone systems
AU215819B2 (en) Improvements in telephone systems
AU221000B2 (en) Improvements in telephone systems
AU214701B2 (en) Improvements in telephone systems
AU216847B2 (en) Improvements in telephone systems
CA541688A (en) Common control telephone systems
AU2747357A (en) Improvements in telephone systems
AU2697857A (en) Improvements in telephone systems
AU2697957A (en) Improvements in telephone systems
AU2730857A (en) Improvements in telephone systems
AU2825357A (en) Improvements in telephone systems
AU2658057A (en) Improvements in telephone systems
CA538498A (en) Telephone systems
CA539700A (en) Telephone systems
CA546387A (en) Telephone systems
CA546624A (en) Telephone systems
AU209194B2 (en) Improvements in telephone systems
AU213260B2 (en) Improvements in telephone systems
AU215332B2 (en) Improvements in telephone systems
AU205812B2 (en) Improvements in telephone systems
AU215161B2 (en) Improvements in telephone systems