LexDanaLexDanabeta
Inventor

Robert G. Upton

Inventor
Montgomery, TX, US

Overview

3→
Patents
1982–1999
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 3 as inventor

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

E21Bprimary
E21BEarth or rock drilling43%
F16CShafts29%
F16JPistons14%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%
PatentTitleYear
RE036452'Composite seal for rotary cone rock bits'19995,362,073'Composite seal for rotary cone rock bits'19944,334,585'Insert retention and cooling apparatus for drag bits'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–1999Patents assigned to SMITH INTERNATIONAL (3)· patent assignee history
1982Based in Dana Point, CA, US· patent location history
1994–1999Based in Montgomery, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SMITH INTERNATIONAL31982–1999
Locations
LocationPatentsSpan
Montgomery, Texas, US21994–1999
Dana Point, California, US11982