Hadley Telephone and Sound Systems
1961 Standard Industrial Group acquired Hadley Telephone and Sound Systems[1], perhaps this was the same as Hadley Sound Equipments?
See Also
Sources of Information
- ↑ The Times, 7 April 1961
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1961 Standard Industrial Group acquired Hadley Telephone and Sound Systems[1], perhaps this was the same as Hadley Sound Equipments?
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