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Inventor

David S. Rowley

Inventor
Salt Lake City, UT, US

Overview

9→
Patents
1978–2014
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 9 as inventor

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

E21Bprimary
E21BEarth or rock drilling71%
F16GBelts, cables, or ropes, predominantly used for driving purposes14%
Y10TTechnical subjects covered by former us classification14%
PatentTitleYear
8,782,856'Rope termination'2014D0328904'Power module for woodworking tools'1992D0326041'Can opener'1992D0315272'Toaster'19914,512,419'Coring device with an improved core sleeve and anti-gripping collar'19854,278,138'Composite heavy metal drill collar'19814,244,432'Earth-boring drill bits'19814,234,048'Drill bits embodying impregnated segments'19804,073,354'Earth-boring drill bits'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1985Patents assigned to CHRISTENSEN INC (5)· patent assignee history
1978–1985Based in Salt Lake City, UT, US· patent location history
1991–1992Patents assigned to HAMILTON BEACH/PROCTOR SILEX INC (2)· patent assignee history
1991Based in Atlanta, GA, US· patent location history
1992Based in Smyrna, GA, US· patent location history
2014Patents assigned to FIRST SUBSEA LTD (1)· patent assignee history
2014Patents assigned to OFFSPRING INTERNAT LTD (1)· patent assignee history
2014Patents assigned to ROWLEY DAVID STUART (1)· patent assignee history
2014Based in Ninfield Battle, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHRISTENSEN INC51978–1985
HAMILTON BEACH/PROCTOR SILEX INC21991–1992
FIRST SUBSEA LTD12014
OFFSPRING INTERNAT LTD12014
ROWLEY DAVID STUARTself12014
Locations
LocationPatentsSpan
Salt Lake City, UT, US51978–1985
Smyrna, Georgia, US21992
Ninfield Battle, GB12014
Atlanta, Georgia, US11991