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pen or similar foremal with retractable klemma.
pen or similar foremal with retractable klemma.
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机译:笔或类似的前额可伸缩的k
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摘要
Writing instrument carries clasp which is spring biased from a projecting position toward a retracted position. The clasp has an axially elongated head the sides of which are guided as the clasp is retracted. Push-button means act axially on a ramp which engages said head to project the clasp.
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