Patents by Inventor Nickolas Demas

Nickolas Demas 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).

  • Lamp pressure checking device
    Patent number: 4337645
    Abstract: The invention relates to a method and apparatus for checking the internal pressure of a filled lamp bulb. According to the invention, a filled bulb to be checked is inserted into a gas tight chamber; the chamber is then sealed and pressurized. The lamp envelope is broken by means in the chamber. Chamber pressure is measured before and after breaking the envelope.
    Type: Grant
    Filed: December 15, 1980
    Date of Patent: July 6, 1982
    Assignee: McGraw-Edison Company
    Inventors: Robert S. Brown, Russell C. Schwickert, Nickolas Demas