Northampton, Pennsylvania
United States
3
2010-11-18
The entities that hold a legal rights for patent applications filed by inventor Wilk Charles E.:
Charles E. Wilk from Northampton, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Coupling having angularly oriented shoulder surfaces
#2 | 2006-11-30Triple-expanded mechanical pipe coupling derived from a standard fitting
#3 | 2005-07-07Mechanical pipe coupling derived from a standard fitting
3693569 ⎘