Inventor

BERTENSHAW DAVID R

GB7 patents

⚠️ This page may combine multiple inventors who share the name “BERTENSHAW DAVID R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

STRAND LIGHTING LTD

2 patents

US5066896ANov 19, 1991

Electric lighting and power controllers therefor

STRAND LIGHTING LTD45 citations91

US5235499AAug 10, 1993

Lamp system having a torroidal light emitting member

STRAND LIGHTING LTD18 citations71

BERTENSHAW DAVID R

2 patents

US5237244AAug 17, 1993

Electric lighting and power controllers therefor

BERTENSHAW DAVID R52 citations90

US5143447ASep 1, 1992

Lamp system having a torroidal light emitting member

BERTENSHAW DAVID R7 citations70

(unassigned)

1 patent

US5424618AJun 13, 1995

Arrangements for reducing interference from a dimming system, and dimmer therefor

49 citations91

RANK ORGANISATION LTD

1 patent

US4437169AMar 13, 1984

Stage lighting control system

RANK ORGANISATION LTD24 citations79

RANK ORGANISATION PLC

1 patent

US4933804AJun 12, 1990

Interference suppression for semi-conducting switching devices

RANK ORGANISATION PLC13 citations67