Patents by Inventor Norbert J. Denhart

Norbert J. Denhart 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: 4344114
    Abstract: A see-through housing fabricated from tamper-proof material is pivotally mounted relative to the undersurface of a flat mounting plate the dimensions of which are such as to exceed the spacing between pairs of adjacent joists or studs in the walls or ceiling of a building, said plate being anchored to said joists or studs by means of fastener elements which are, preferably, thereafter rendered irremovable. An opening is provided within the plate for providing access to an electrical outlet or the like which projects through said opening, said outlet being visible when enclosed within the housing.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: August 10, 1982
    Inventor: Norbert J. Denhart
  • Patent number: 4290548
    Abstract: A high security mailbox for multiple family dwellings is provided with sliding doors opening to individual compartments. The doors slide in a channel between a one piece face plate and retaining means which are welded to the mailbox housing.
    Type: Grant
    Filed: March 13, 1980
    Date of Patent: September 22, 1981
    Assignee: Elm Window Co.
    Inventor: Norbert J. Denhart
  • Patent number: 4158898
    Abstract: Floor supported vertically adjustable means are provided for engaging the underside of the front lip of a wall-mounted washstand for providing positive support therefor of such a nature as to fully support the forward edge in such a manner as to effectively prevent damage to or removal of the washbowl.
    Type: Grant
    Filed: April 7, 1978
    Date of Patent: June 26, 1979
    Inventor: Norbert J. Denhart
  • Patent number: 4157731
    Abstract: A protective housing is provided with bottom, front, upwardly inclined and depending panels for completely housing the bottom, front and upper portions of a strip heater, said housing being anchored to the floor and upstanding wall along which the strip heater is disposed.
    Type: Grant
    Filed: November 2, 1977
    Date of Patent: June 12, 1979
    Inventor: Norbert J. Denhart