Patents Represented by Attorney Don Ferrell

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  • Dual blade saw attachment
    Patent number: 4719701
    Abstract: An attachment for a portable jig saw permits a concurrent use of a pair of jig saw blades. The blades are each attached to a holder by threaded fasteners, while the holder is then threadably attached to the jig saw. The spacing between the blades may be varied by an adjustment of the holder.
    Type: Grant
    Filed: October 14, 1986
    Date of Patent: January 19, 1988
    Inventor: David S. Williams
  • Playground rotating swing
    Patent number: D289541
    Type: Grant
    Filed: September 26, 1984
    Date of Patent: April 28, 1987
    Inventor: Karen K. S. Forester