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11 фев 1997 г. - US5600853A Award date: 2/11/1997 Status: Expired
Добавлено на ленту времени:
Patent timeline
By
Chris Reid
18 дек 2019
0
0
390
Дата:
11 фев 1997 г.
Сейчас
~ 28 г назад
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