Patents Assigned to Optyl Corporation
  • Patent number: D243237
    Type: Grant
    Filed: October 21, 1975
    Date of Patent: February 1, 1977
    Assignee: Optyl Corporation
    Inventor: Elfriede Teufelhart
  • Patent number: D243330
    Type: Grant
    Filed: November 24, 1975
    Date of Patent: February 8, 1977
    Assignee: Optyl Corporation
    Inventor: Karl Pichler
  • Patent number: D245169
    Type: Grant
    Filed: October 21, 1975
    Date of Patent: July 26, 1977
    Assignee: Optyl Corporation
    Inventor: Elfriede Teufelhart
  • Patent number: D277290
    Type: Grant
    Filed: February 9, 1983
    Date of Patent: January 22, 1985
    Assignee: Optyl Corporation
    Inventor: Ulrich J. Haas