LexDanaLexDanabeta
Inventor

Steven Hargreaves

Inventor
St. Albert, CA

Overview

4→
Patents
2012–2013
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 4 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E21Bprimary
E21BEarth or rock drilling50%
B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding25%
Y10TTechnical subjects covered by former us classification25%
PatentTitleYear
8,479,614'Internally retained jaw roller pin'20138,453,541'Reduced weight power tong for turning pipe'20138,267,448'Cam arm actuated backup tong'20128,234,957'Internally retained jaw roller pin'2012

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2012–2013Patents assigned to GERWING MURRAY (4)· patent assignee history
2012–2013Patents assigned to HARGREAVES STEVEN (4)· patent assignee history
2012–2013Patents assigned to MCCOY CORP (4)· patent assignee history
2012–2013Patents assigned to DAGENAIS DAN (2)· patent assignee history
2012–2013Patents assigned to ISAACSON KELVIN (2)· patent assignee history
2012–2013Based in St. Albert, CA· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
GERWING MURRAY42012–2013
HARGREAVES STEVENself42012–2013
MCCOY CORP42012–2013
DAGENAIS DAN22012–2013
ISAACSON KELVIN22012–2013
Locations
LocationPatentsSpan
St. Albert, CA42012–2013