Robert S. Hilbert

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La Canada, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Three dimensional reflex lens systems
- Patent number 4,878,744
- Issue date Nov 7, 1989
- Capitol Records, Inc.
- Robert S. Hilbert
- G02 - OPTICS
Information Patent Grant
Three-dimensional reflex lens systems
- Patent number 4,844,601
- Issue date Jul 4, 1989
- Capitol Records
- Robert S. Hilbert
- G02 - OPTICS
Information Patent Grant
Three dimensional reflex lens systems
- Patent number 4,738,518
- Issue date Apr 19, 1988
- Capitol Records
- Robert S. Hilbert
- G02 - OPTICS
Information Patent Grant
Three dimensional reflex lens systems
- Patent number 4,688,906
- Issue date Aug 25, 1987
- Capitol Records
- Robert S. Hilbert
- G02 - OPTICS
Information Patent Grant
Objective lens system with aspheric Fresnel elements
- Patent number 4,293,196
- Issue date Oct 6, 1981
- Fantacia
- Robert S. Hilbert
- G02 - OPTICS
Information Patent Grant
Composite photography system
- Patent number 4,249,805
- Issue date Feb 10, 1981
- Magicam, Inc.
- Robert S. Hilbert
- G02 - OPTICS