David John Royle
United Kingdom
| Total IP | 2 |
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| Total IP Rank # | 720,352 |
| IP Activity Score | 0/5.0 0 |
| IP Activity Rank # | 1,656,072 |
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| Last Patent | 2019 - Smoke ventilation | |||||||||||||||
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| First Patent | 2012 - Smoke ventilation | |||||||||||||||
Latest Inventions, Goods, Services
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