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AU107689B2 - Improvements in or relating to sound operated control systems - Google Patents

Improvements in or relating to sound operated control systems

Info

Publication number
AU107689B2
AU107689B2 AU1509/38A AU150938A AU107689B2 AU 107689 B2 AU107689 B2 AU 107689B2 AU 1509/38 A AU1509/38 A AU 1509/38A AU 150938 A AU150938 A AU 150938A AU 107689 B2 AU107689 B2 AU 107689B2
Authority
AU
Australia
Prior art keywords
relating
control systems
operated control
sound operated
sound
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
AU1509/38A
Other versions
AU150938A (en
Inventor
Rodolph Koch Winfield
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Filing date
Publication date
Application filed by Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Application granted granted Critical
Publication of AU107689B2 publication Critical patent/AU107689B2/en
Publication of AU150938A publication Critical patent/AU150938A/en
Expired legal-status Critical Current

Links

AU1509/38A 1938-04-13 Improvements in or relating to sound operated control systems Expired AU107689B2 (en)

Publications (2)

Publication Number Publication Date
AU107689B2 true AU107689B2 (en) 1939-06-29
AU150938A AU150938A (en) 1939-06-29

Family

ID=

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