John Charlton

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Lancashire, GB

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Patents Grantslast 30 patents

Information Patent Grant
Safety device for projector support arm for an interactive display...
- Patent number 9,351,419
- Issue date May 24, 2016
- Promethean Limited
- John Charlton
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
SAFETY DEVICE FOR INTERACTIVE DISPLAY SYSTEM
- Publication number 20140146508
- Publication date May 29, 2014
- PROMETHEAN LIMITED
- John Charlton
- G06 - COMPUTING CALCULATING COUNTING