AU138489B2 - Improvements relating to automatic telephone systems - Google Patents

Improvements relating to automatic telephone systems

Info

Publication number: AU138489B2
Authority: AU; Australia
Prior art keywords: improvements relating; telephone systems; automatic telephone; automatic; relating
Prior art date: 1947-01-06
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

AU33343/50A

Other versions

Filing date

1947-01-06

Publication date

1950-05-25

1947-01-06 Application filed filed Critical

1950-05-25 Application granted granted Critical

1950-05-25 Publication of AU3334350A publication Critical patent/AU3334350A/en

1950-05-25 Publication of AU138489B2 publication Critical patent/AU138489B2/en

Status Expired legal-status Critical Current

AU33343/50A 1947-01-06 Improvements relating to automatic telephone systems Expired AU138489B2 (en)

Publication Number	Publication Date
AU3334350A AU3334350A (en)	1950-05-25
AU138489B2 true AU138489B2 (en)	1950-05-25

Publication	Publication Date	Title
AU138489B2 (en)	1950-05-25	Improvements relating to automatic telephone systems
AU3334350A (en)	1950-05-25	Improvements relating to automatic telephone systems
AU143205B2 (en)	1947-10-30	Improvements relating to telephone systems
AU137980B2 (en)	1947-08-28	Improvements relating to telephone systems
CA444075A (en)	1947-09-09	Automatic telephone system
CA439778A (en)	1947-02-18	Automatic telephone system
AU134542B2 (en)	1946-11-28	Improvements relating to automatic telephone systems
AU131426B2 (en)	1946-05-06	Improvements relating to automatic telephone systems
AU131425B2 (en)		Improvements relating to automatic telephone systems
AU1314147A (en)	1947-08-28	Improvements relating to telephone systems
AU1541447A (en)	1947-10-30	Improvements relating to telephone systems
CA445443A (en)	1947-12-09	Telephone system
CA439394A (en)	1947-01-28	Telephone system
CA442718A (en)	1947-07-08	Telephone system
CA440944A (en)	1947-04-22	Telephone system
CA443407A (en)	1947-08-05	Telephone system
CA441465A (en)	1947-05-20	Telephone system
CA443722A (en)	1947-08-19	Telephone system
CA443037A (en)	1947-07-22	Telephone system
CA443405A (en)	1947-08-05	Telephone system
CA445441A (en)	1947-12-09	Telephone system
CA442988A (en)	1947-07-15	Telephone system
CA442941A (en)	1947-07-15	Telephone system
CA445442A (en)	1947-12-09	Telephone system
CA441179A (en)	1947-05-06	Telephone system