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H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
H01H1/504—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by thermal means
FR710780D1930-05-101930-05-10Perfectionnements aux contacts électriques
ExpiredFR710780A
(fr)