| 摘要 |
A metal foil lead for sealing into vitreous material is comprised of a short length of metal foil ribbon having an etched tongue end portion with a feathered edge completely therearound and an unetched contact end portion. The foil leads may be made by forming a metal foil ribbon with slots in one side edge thereof at spaced points therealong, electrolytically etching the slotted side only of the ribbon to feather the exposed edges thereof, and then transversely severing the ribbon at each of the slots therein to separate it into individual foil leads.
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