EST
Filed: September 26, 2002
Metal pipe and tube pressure testing and plugging apparatus, namely, pipe and tube hydrostatic test plugs, heat exchanger…
Owned by: EST Group, Inc.
Serial Number: 76453067
ESTHX
Heat exchangers and heat exchanger parts, namely, pressure vessels
Owned by: EST Group, Inc.
Serial Number: 76453068
HYDRA-LOC
Filed: October 2, 2009
Metallic tube sleeves for repairing heat exchanger and condenser tubes
Owned by: EST Group, Inc.
Serial Number: 76699719
GRIPTIGHT
Filed: October 2, 2009
Reusable metal hydrostatic high-pressure test isolation plug for pressure testing open end pipes, pipelines, tubes and pressure…
Owned by: EST Group, Inc.
Serial Number: 76699720
EST GROUP INC
Filed: September 26, 2002
Heat exchanger and condenser tube plugging and repairing services
Owned by: EST Group, Inc.
Serial Number: 76975710
GTMAX
Filed: April 17, 2015
reusable metal hydrostatic high-pressure test isolation plugs for use in creating a seal within open-ended elbow joints…
Owned by: EST Group, Inc.
Serial Number: 86600819
GRIPTIGHT MAX
Filed: April 17, 2015
reusable metal hydrostatic high-pressure test isolation plugs for use in creating a seal within open-ended elbow joints…
Owned by: EST Group, Inc.
Serial Number: 86600841
