Circle Engine Co
United States of America
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| Total IP | 2 |
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| Total IP Rank # | 741,170 |
| IP Activity Score | 0/5.0 0 |
| IP Activity Rank # | 1,707,733 |
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| Last Patent | 2016 - Rotary internal combustion engine | |||||||||||||||
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| First Patent | 2013 - Rotary internal combustion engine | |||||||||||||||
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