Patents by Inventor Nikolai Antonovich Shestak

Nikolai Antonovich Shestak 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).

  • Method of making glass tubes
    Patent number: 3937623
    Abstract: A method of making glass tubes in which forced cooling of the tube is effected from the inside thereof in an annealing section of a tube fabricating plant.
    Type: Grant
    Filed: July 25, 1973
    Date of Patent: February 10, 1976
    Inventors: Vasily Porfirovich Kononko, Konstantin Timofeevich Bondarev, Alexandr Alexandrovich Krivokon, Nikolai Nikiforovich Kovshar, Ljudmila Mikhailovna Ivanova, Elena Gavrilovna Frolova, Nikolai Antonovich Shestak, Nikolai Leontievich Shevchenko