Patents Assigned to Keystone Lamp Mfg. Corporation
  • Electric lamp
    Patent number: 4410932
    Abstract: A table, wall, ceiling or desk lamp is provided with a translucent plastic shade having a top reflector at its upper end and bonded at its lower end to the outer periphery of a prismatic diffuser whereby the shade, top reflector and diffuser may be removed as a unit.
    Type: Grant
    Filed: June 11, 1981
    Date of Patent: October 18, 1983
    Assignee: Keystone Lamp Mfg. Corporation
    Inventor: Joseph Oster
  • Collapsible lamp shade
    Patent number: D246397
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: November 15, 1977
    Assignee: Keystone Lamp Mfg. Corporation
    Inventor: Donald J. Booty