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Invention Grant
US2815779A Method of and apparatus for stretching and stress relieving lumber 失效
拉伸和应力消除木材的方法和设备

  • Patent Title: Method of and apparatus for stretching and stress relieving lumber
  • Patent Title (中): 拉伸和应力消除木材的方法和设备
  • Application No.: US56751656
    Application Date: 1956-02-24
  • Publication No.: US2815779A
    Publication Date: 1957-12-10
  • Inventor: HIGGINS FRANK O
  • Applicant: HIGGINS IND INC
  • Assignee: Higgins Ind Inc
  • Current Assignee: Higgins Ind Inc
  • Priority: US56751656 1956-02-24; GB4336060 1960-12-16
  • Main IPC: B27D1/00
  • IPC: B27D1/00 ;  B27M1/00
Method of and apparatus for stretching and stress relieving lumber
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