Derek C. Roberts

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London, GB

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Patents Grantslast 30 patents

Information Patent Grant
Container and closure having tamper-proof feature
- Patent number 4,417,666
- Issue date Nov 29, 1983
- Johnsen & Jorgensen (Plastics) Limited
- Derek C. Roberts
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL