AU256247B2 - Lockout circuit for automatic telephone exchange - Google Patents

Lockout circuit for automatic telephone exchange

Info

Publication number
AU256247B2
AU256247B2 AU4740/61A AU474061A AU256247B2 AU 256247 B2 AU256247 B2 AU 256247B2 AU 4740/61 A AU4740/61 A AU 4740/61A AU 474061 A AU474061 A AU 474061A AU 256247 B2 AU256247 B2 AU 256247B2
Authority
AU
Australia
Prior art keywords
telephone exchange
automatic telephone
lockout circuit
lockout
circuit
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 - Lifetime
Application number
AU4740/61A
Inventor
Brian Delanoy Donald
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.)
Pye Electronic Products Ltd
Original Assignee
Pye Ltd
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 of AU256247B2 publication Critical patent/AU256247B2/en
Application filed by Pye Ltd filed Critical Pye Ltd
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

AU4740/61A 1960-05-25 1961-05-17 Lockout circuit for automatic telephone exchange Expired - Lifetime AU256247B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB18474/60 1960-05-25

Publications (1)

Publication Number Publication Date
AU256247B2 true AU256247B2 (en)

Family

ID=

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