Patents Represented by Attorney David C. White
  • Patent number: 4386773
    Abstract: The present invention relates to a memory expansion device for use in increasing the ROM and adding RAM to a program cartridge. The program cartridge is used in association with electronic video games. The present invention relates to various electronic circuitry, including certain logic elements and ROM and RAM, allowing expansion of the memory without increasing or changing the number of conductor contact ribbons formed in parallel for interfacing the cartridge directly to the bus connector of the electronic video game.
    Type: Grant
    Filed: June 22, 1981
    Date of Patent: June 7, 1983
    Inventor: John M. Bronstein
  • Patent number: 4346057
    Abstract: This invention is a device for increasing the rate of evaporation from tubes, usually test tubes, by the introduction of a partial vacuum or by using a stream of gas through needles which extend into the tubes. This invention is an improvement on U.S. Pat. No. 4,003,713. The improvement is to divide the device into two separate units which may either be used together or independently of each other. This allows the operator to run two different samples at one time or he may run one smaller sample without waste resulting from unused needles. Furthermore, the improvement provides for variations in the height of the needles above the substance to be evaporated. This increases the speed and efficiency of the evaporation. Finally the improvement allows the operator to use the device as a drying rack for small glassware.
    Type: Grant
    Filed: June 22, 1981
    Date of Patent: August 24, 1982
    Inventor: Everett N. Bowser
  • Patent number: 4279327
    Abstract: This invention relates to a device for attachment to ladders which will enable them to securely anchor to the peak of a roof quickly and easily, while increasing safety for firemen cutting ventilation holes near the peak of the roof. The attachment for roof ladders allows the firemen to stand on a support directly below the roof area where the hole is cut. The invention can be folded into a compact bundle for storage and transportation, and is light in weight.
    Type: Grant
    Filed: April 4, 1980
    Date of Patent: July 21, 1981
    Inventor: Richard A. Warren
  • Patent number: 4181284
    Abstract: An improved antenna bracket for mounting masts for antennas to the exterior wall of buildings having various roof and overhang dimensions. The mounting bracket can be made of parts having standard dimensions and can support an antenna, mast, and rotor, without guy wires or additional support against the roof of the building.
    Type: Grant
    Filed: June 9, 1978
    Date of Patent: January 1, 1980
    Inventor: Merle N. Seppelfrick