Patents by Inventor Eskil Virgin

Eskil Virgin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Joining arrangement for ventilation ducts and the like
    Patent number: 4046409
    Abstract: An arrangement for joining of ventilation ducts and the like comprises a first and a second member intended for connection with a first duct end and a second duct end resp., the second member being provided with an upright stiffening leg and a horizontal leg terminated by a hook-shaped member, which can be snapped over a raised edge of the first member. The first member comprises a horizontal lip intended to be received by the second member.
    Type: Grant
    Filed: July 14, 1976
    Date of Patent: September 6, 1977
    Assignee: Vavra Plat AB of Kungalv
    Inventor: Eskil Virgin