SURGE PROTECTIVE DEVICE
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United States of America Patent
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Issued Date -
Mar 21, 2019
app pub date -
Mar 17, 2017
filing date -
Mar 17, 2017
priority date (Note) -
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Abstract
A surge protective device of the present invention includes an insulating tube, a pair of sealing electrodes for closing openings on both ends of the insulating tube so as to seal a discharge control gas inside the tube, wherein the pair of sealing electrodes has a pair of convex electrode portions projecting inwardly so as to face to each other, and at least one groove part extending in a circumferential direction is formed on the inner circumferential surface of the insulating tube.
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