Patents by Inventor Nathan Swerdlow

Nathan Swerdlow 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).

  • Spare transformer connecting means
    Patent number: RE29569
    Abstract: Discloses a power system in which three single phase transformers have their primary windings connected in delta to a 3-phase isolated phase bus. Switching means is provided for connecting a spare transformer to said bus as a replacement for any one of said single phase transformers. Special interlocking means assures that the spare transformer is connected to the bus in the same manner as the transformer it replaces. .Iadd.
    Type: Grant
    Filed: August 6, 1975
    Date of Patent: March 7, 1978
    Assignee: General Electric Company
    Inventor: Nathan Swerdlow