John A. VanHoogstrate Jr.

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St. Louis County, MO, US

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Patents Grantslast 30 patents

Information Patent Grant
Visual display system for producing a continuous virtual image
- Patent number 6,152,739
- Issue date Nov 28, 2000
- McDonnell Douglas Corporation
- John G. Amery
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical corrector
- Patent number 4,964,718
- Issue date Oct 23, 1990
- McDonnell Douglas Corporation
- John A. Van Hoogstrate
- G02 - OPTICS
Information Patent Grant
Schlieren color television image aperturing device
- Patent number 4,931,859
- Issue date Jun 5, 1990
- McDonnell Douglas Corporation
- Homer E. Dillard
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Schlieren color television image aperturing device
- Patent number 4,814,866
- Issue date Mar 21, 1989
- McDonnell Douglas Corporation
- Homer E. Dillard
- G02 - OPTICS
Information Patent Grant
Wide angle projection system
- Patent number 4,427,274
- Issue date Jan 24, 1984
- McDonnell Douglas Corporation
- Marvin L. Pund
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS