Potomac, Maryland
United States
3
2013-10-10
The entities that hold a legal rights for patent applications filed by inventor Martin David:
David Martin from Potomac, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Method and system for rotary coupling and planetary gear
#2 | 2012-10-11Heat Exchange Using Underground Water System
#3 | 2011-09-22Wind turbine blade system with air passageway
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