844087
859199
2915844
3309806
3324290
3560729
3864861
Low energy sign illumination system
Patent #: 4139957
Issued on: 02/20/1979
Inventor: Minogue
Solid state lamp
Patent #: 4211955
Issued on: 07/08/1980
Inventor: Ray
Incandescent display system
Patent #: 4234914
Issued on: 11/18/1980
Inventor: Boesen
More ...
Alpha-numeric display array and method of manufacture
Patent #: 4254453
Issued on: 03/03/1981
Inventor: Mouyard , et al.
Display apparatus and associated circuit
Patent #: 4259800
Issued on: 04/07/1981
Inventor: Schoenfeld
Colored-light emitting display
Patent #: 4271408
Issued on: 06/02/1981
Inventor: Teshima , et al.
Light-emitting diode display
Patent #: 4298869
Issued on: 11/03/1981
Inventor: Okuno
Alpha-numeric display array and method of manufacture
Patent #: 4345308
Issued on: 08/17/1982
Inventor: Mouyard , et al.
Self-luminous safety sign
Patent #: 4383382
Issued on: 05/17/1983
Inventor: Hegarty
Edge lighted sign
Patent #: 4435743
Issued on: 03/06/1984
Inventor: Plumly
Apparatus for creating an even illumination of a plurality of title blocks
Patent #: 4443835
Issued on: 04/17/1984
Inventor: Brautigam , et al.
Light emitting diode lamp and method for producing thereof
Patent #: 4630183
Issued on: 12/16/1986
Inventor: Fujita
Emergency sign
Patent #: 4682147
Issued on: 07/21/1987
Inventor: Bowman
Color display system utilizing a matrix arrangement of triads
Patent #: 4720709
Issued on: 01/19/1988
Inventor: Imamura , et al.
Illuminated display board
Patent #: 4724629
Issued on: 02/16/1988
Inventor: Walton
LED lamp
Patent #: 4727289
Issued on: 02/23/1988
Inventor: Uchida
Illuminated information display
Patent #: 4768300
Issued on: 09/06/1988
Inventor: Rutili
Long-life luminaires
Patent #: 4782429
Issued on: 11/01/1988
Inventor: Walton , et al.
Adjustable lighting assembly
Patent #: 4849864
Issued on: 07/18/1989
Inventor: Forrest
Indirect lighting fixture
Patent #: 4884178
Issued on: 11/28/1989
Inventor: Roberts
Light emitting diode lamp
Patent #: 4929866
Issued on: 05/29/1990
Inventor: Murata, et al.
Illuminated sign for residence street address
Patent #: 4951406
Issued on: 08/28/1990
Inventor: Lemire
Removable panel illuminating module
Patent #: 4965457
Issued on: 10/23/1990
Inventor: Wrobel, et al.
Exit sign
Patent #: 4967317
Issued on: 10/30/1990
Inventor: Plumly
Photographic flash apparatus
Patent #: 4991063
Issued on: 02/05/1991
Inventor: Stoneham
Long-life luminaires
Patent #: 5012157
Issued on: 04/30/1991
Inventor: Walton, et al.
Exit sign
Patent #: 5018290
Issued on: 05/28/1991
Inventor: Kozek, et al.
Illuminated sign system
Patent #: 5020252
Issued on: 06/04/1991
Inventor: De Boef
Light emitting diode clusters for display signs
Patent #: 5036248
Issued on: 07/30/1991
Inventor: McEwan, et al.
Illuminated sign having stencil panel and reflector panel
Patent #: 5105568
Issued on: 04/21/1992
Inventor: Branning
Illuminating device
Patent #: 5136483
Issued on: 08/04/1992
Inventor: Schoniger, et al.
Rotatable led cluster device
Patent #: 5160201
Issued on: 11/03/1992
Inventor: Wrobel
Illuminant display device
Patent #: 5268828
Issued on: 12/07/1993
Inventor: Miura
Sign with indirect illumination from light emitting diodes
Patent #: 5276591
Issued on: 01/04/1994
Inventor: Hegarty
LED exit light fixture
Patent #: 5299109
Issued on: 03/29/1994
Inventor: Grondal
Self-energizing LED lamp
Patent #: 5303124
Issued on: 04/12/1994
Inventor: Wrobel
Lighting device used in an exit sign Patent #: 5410453
Issued on: 04/25/1995
Inventor: Ruskouski
December 1, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
