Jamul, California
United States
3
2012-03-15
Harry Bruce Crower from Jamul, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Hybrid combustion energy conversion engines
#2 | 2008-03-06Free piston pressure spike modulator for any internal combustion engine
#3 | 2005-12-29Centrifugally engaged drive sprocket assembly
3117582 ⎘