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Inventor

David S. Cameron

Inventor
Aberdeen, GB

Overview

9→
Patents
1987–2005
Patent span
Performing operations
Primary field (CPC B)

Patents· 9 as inventor

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

B60Gprimary
B60GVehicle suspension arrangements33%
E21BEarth or rock drilling33%
F16FSprings17%
B66CCranes8%
H01RElectrically-conductive connections8%
PatentTitleYear
6,904,975'Interventionless bi-directional barrier'20056,776,636'PBR with TEC bypass and wet disconnect/connect feature'20046,357,768'Straight line linkage mechanism'20026,142,225'Selective mono bore diverter system'20005,865,261'Balanced or underbalanced drilling method and apparatus'19995,116,341'Lifting shackle'19924,826,204'Laterally offset dual volume air damper suspension strut with minimized side load'19894,655,438'Hydraulically damped dual sleeve air spring suspension'19874,648,623'Vehicle suspension strut with lower rotary bearing cup assembly for a dirigible road wheel'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2002Patents assigned to GEN MOTORS CORP (4)· patent assignee history
1987–2002Based in Grosse Pointe Woods, MI, US· patent location history
1992Patents assigned to BRITISH GUIDE RAILS LTD (1)· patent assignee history
1992Based in Ecton Brook, GB· patent location history
1999–2005Patents assigned to BAKER HUGHES INC (4)· patent assignee history
1999–2005Based in Aberdeen, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BAKER HUGHES INC41999–2005
GEN MOTORS CORP41987–2002
BRITISH GUIDE RAILS LTD11992
Locations
LocationPatentsSpan
Aberdeen, GB41999–2005
Grosse Pointe Woods, MI, US41987–2002
Ecton Brook, GB11992