Patents Represented by Law Firm Townsend and Towsend
  • Vehicle for carrying debris boxes
    Patent number: 5074740
    Abstract: A vehicle having a flat bed for hauling a stack of open-top trash boxes. The vehicle also has a boom which can rotate about a vertical axis through an angle of 360.degree., and the boom is made up of relatively shiftable segments so that the effective reach of the boom can be changed from a minimum effective length to a maximum effective length. The outer end of the boom has a jaw structure to grasp a trash box at the center portion thereof to lift it off the bed or to place a trash box on the bed.
    Type: Grant
    Filed: February 12, 1990
    Date of Patent: December 24, 1991
    Assignee: Zanker Road Resource Management
    Inventor: Jesse C. Weigel
  • Reaction well shape for a microwell tray
    Patent number: 5002889
    Abstract: A microwell for enzyme-linked immunosorbent assays has a concavely curved, circumferential sidewall, a flat optical bottom and a top lip, including smooth transitions between the top lip, concave sidewall and flat bottom. This shape minimizes the tendency of fluid to cling to the well for washing efficiency and maximizes a vertical optical path length of fluid in the well for improved optical determination.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: March 26, 1991
    Assignee: Genetic Systems Corporation
    Inventor: Gerald L. Klein