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For the Inventor, By the Inventor

Winnipeg, Canada

The Manitoba Hydro-electric Board


USPTO Granted Patents = 2


Forward Citations = 38

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3 inventors (with patents filed for the assignee):

goldMedal Ireneusz Witkowski (1 out of 5 patents)

silverMedal Caron Hopfner (1 out of 1 patent)

bronzeMedal Ernst H Wiebe (1 out of 1 patent)


2 patents:

1. 6988816 - Energy efficient lighting apparatus and use thereof (2006-01-24),
2. 6770810 - High voltage electrical handling device enclosure (2004-08-03),
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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#66 in Winnipeg

#5,847 in Canada

...
Winnipeg, Canada

The Manitoba Hydro-electric Board

Forward Citations = 38

3 inventors:

goldMedal Ireneusz Witkowski (1 out of 5 patents)

silverMedal Caron Hopfner (1 out of 1 patent)

bronzeMedal Ernst H Wiebe (1 out of 1 patent)

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