Michael D. Crossfield

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Brackley, GB

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Patents Grantslast 30 patents

Information Patent Grant
Antipilferage systems
- Patent number 5,049,856
- Issue date Sep 17, 1991
- Scientific Generics Limited
- Michael D. Crossfield
- G08 - SIGNALLING
Information Patent Grant
Antipilferage tags having an acoustic resonator chamber
- Patent number 4,999,609
- Issue date Mar 12, 1991
- Scientific Generics Limited
- Michael D. Crossfield
- G08 - SIGNALLING
Information Patent Grant
Article detection and/or recognition using magnetic devices
- Patent number 4,940,966
- Issue date Jul 10, 1990
- Scientific Generics Limited
- Robert M. Pettigrew
- G08 - SIGNALLING