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Invention Grant
US874222A Combination of line and screen photography. 失效
线和屏幕摄影的组合。

  • Patent Title: Combination of line and screen photography.
  • Patent Title (中): 线和屏幕摄影的组合。
  • Application No.: US1906325940
    Application Date: 1906-07-12
  • Publication No.: US874222A
    Publication Date: 1907-12-17
  • Inventor: MERTENS EDUARD
  • Applicant: MERTENS EDUARD
  • Assignee: Eduard Mertens
  • Current Assignee: Eduard Mertens
  • Priority: US1906325940 1906-07-12
Combination of line and screen photography.
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