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Vancouver, Canada

David Roberts

Average Co-Inventor Count = 3.00

ph-index = 2

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 21

David RobertsDavid Earl Leger (2 patents)David RobertsMark Chesley McDonald (2 patents)David RobertsDavid Roberts (2 patents)David Earl LegerDavid Earl Leger (9 patents)Mark Chesley McDonaldMark Chesley McDonald (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Fab Developments Inc. (2 from 2 patents)


2 patents:

1. 6017053 - Folding wheelbarrow

2. 5908202 - Folding wheelbarrow

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as of
12/20/2025
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