Invention Grant
US1183446A Plastic composition and method of making the same. 失效
塑料组合物及其制备方法。

  • Patent Title: Plastic composition and method of making the same.
  • Patent Title (中): 塑料组合物及其制备方法。
  • Application No.: US487015
    Application Date: 1915-01-28
  • Publication No.: US1183446A
    Publication Date: 1916-05-16
  • Inventor: FREEMAN WALTER K
  • Applicant: FREEMAN WALTER K
  • Assignee: Walter K Freeman
  • Current Assignee: Walter K Freeman
  • Priority: US487015 1915-01-28
Plastic composition and method of making the same.
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