Calgary
Canada
3
2008-03-20
Michael Fraser from Calgary, CA has applied for patents for these inventions. The list has both pending applications and granted patents:
Low density cements for use in cementing operations
#2 | 2008-03-20Low density cements for use in cementing operations
#3 | 2008-03-20Low density cements for use in cementing operations
4139701 ⎘