|
2011
|
Invention
|
Flow control for large diameter conduits. A slide blind controls flow through conduits at a flang... |
|
2007
|
Invention
|
Apparatus for controlling flow through a conduit. A conduit apparatus includes a slide plate betw... |
|
|
Invention
|
Polish rod clamp apparatus. A polish rod clamp apparatus has a body defining a lower rod aperture... |
|
2006
|
Invention
|
Polished rod clamp apparatus |
|
2005
|
Invention
|
Pumping from two levels of a pool of production fluid, and one way valve therefore. A method of p... |
|
|
P/S
|
Oil well pumps. |
