Birch, Stewart, Kolasch & Birch
Cylindrical organic electrolyte battery with a PTC device
 In a cylindrical organic electrolyte battery with a PTC device, the PTC device is attached to the bottom of the battery case through a metal plate so that the upper opening of the battery case can be tightly sealed. 
Hitachi Maxell, Ltd.
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Kaoru Osamu Yoshiki Osamu
Hisatomi Kajii Somatomo Watanabe