Robert A. Administrator of the National Aeronautics and Space Administration, with resp Frosch

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Glendale, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for producing concentric hollow spheres
- Patent number 4,279,632
- Issue date Jul 21, 1981
- Robert A. Administrator of the National Aeronautics and Space Administration,...
- B22 - CASTING POWDER METALLURGY