David A. Armstrong

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Swansea, GB

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Patents Grantslast 30 patents

Information Patent Grant
Strip feeding
- Patent number 4,332,357
- Issue date Jun 1, 1982
- British Steel Corporation
- David A. Armstrong
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Profile gauging
- Patent number 4,213,245
- Issue date Jul 22, 1980
- British Steel Corporation
- David A. Armstrong
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...