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1979-09-18
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1950-11-28
Hybrid channel-branching microwave filter
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2020-08-07
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Wave guide system
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1972-05-24
Multiple hybrid circuit
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1980-07-01
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1979-09-18
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1957-03-05
Hybrid ring coupling arrangements
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1952-05-06
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1962-01-17
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1977-05-18
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1969-06-17
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1970-09-30
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