Patents Represented by Attorney John B. Sponsler
  • Patent number: 4195385
    Abstract: A double quill-like, security mechanism having a pair of concentric, hollow cylinders, one positioned to rotate wholly within the other and restricted against axial displacement thereby to provide means for supporting a rotatable gate structure carried by the outer cylinder against removal therefrom except at a predetermined angular relationship of rotation between the two cylinders.
    Type: Grant
    Filed: May 11, 1978
    Date of Patent: April 1, 1980
    Inventor: George A. Cole
  • Patent number: D248975
    Type: Grant
    Filed: January 19, 1976
    Date of Patent: August 15, 1978
    Assignee: Tread Corporation
    Inventor: David M. Cole
  • Patent number: D252715
    Type: Grant
    Filed: November 26, 1976
    Date of Patent: August 21, 1979
    Inventor: David M. Cole