chadless punch

名词 n.
中文释义

英文释义

名词 n.
  1. A paper tape punch that does not produce little pieces of paper. Instead, "the perforations are not completely cut out but the chads are permitted to remain attached to the perforated material (for example, tape)". (U.S. Patent 2,255,794, filed May 20, 1939)

词形变化

chadless punches plural
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