Patents by Inventor Jesse L. Sigelman

Jesse L. Sigelman 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).

  • Self-contained refrigerator open door indicator
    Patent number: 4691195
    Abstract: A device for indicating that a refrigerator door is open, includes a housing which is mountable on a refrigerator in the vicinity of the refrigerator door during the use of the device. A transducer is mountable at the refrigerator door gasket for changing an electrical parameter in response to the movement of the refrigerator door from its closed position to an open position. Circuitry disposed in the housing senses the change in the electrical parameter of the transducer to produce an alarm after a preselected time delay.
    Type: Grant
    Filed: February 26, 1985
    Date of Patent: September 1, 1987
    Assignee: Jesse L. Sigelman
    Inventors: Jesse L. Sigelman, Saul Miodownik
  • Binocular ophthalmoscope
    Patent number: 4538888
    Abstract: A binocular ophthalmoscope of the type including an optical viewing system. The binocular ophthalmoscope includes a headgear adapted to be worn on the examiner's head for supporting the optical viewing system in optical alignment with the examiner's eyes and light source for illuminating a patient's eye which is slideably mounted on the headgear and movable in a lateral direction.
    Type: Grant
    Filed: June 24, 1982
    Date of Patent: September 3, 1985
    Inventor: Jesse L. Sigelman