Patents by Inventor Frederick S. Metcalfe, deceased

Frederick S. Metcalfe, deceased 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).

  • Patent number: 4977750
    Abstract: A room air conditioner is assembled from prefabricated modular units. A refrigeration system module allows the compressor, condenser and evaporator to be per-assembled on a base. An air system allows the fan motor, fans, shrouds and other partitions to be pre-assembled as a unit and the electrical controls and mounting panel are pre-assembled as another unit. these units are then sequentially assembled on a main assembly line into the finished air conditioner unit.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: December 18, 1990
    Inventor: Frederick S. Metcalfe, deceased