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Add AND condition
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Lightning arrester

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H01T1/15 Details of spark gaps for protection against excessive pressure
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US3441803A

United States

Other languages
English
Inventor
Hanspeter Christener
Current Assignee
BBC Brown Boveri AG Germany

Worldwide applications
1965 CH DE 1966 US AT SE GB 1967 DE JP

Application US578204A events
1969-04-29
Application granted
Anticipated expiration
Expired - Lifetime