Growing community of inventors

Markham, Canada

William H Maddock

Average Co-Inventor Count = 1.25

ph-index = 9

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 = 221

William H MaddockDavid A Parshad (1 patent)William H MaddockBert Bobrovniczky (1 patent)William H MaddockSamuel K-h Ng (1 patent)William H MaddockCharles L Henritzy (1 patent)William H MaddockWilliam H Maddock (10 patents)David A ParshadDavid A Parshad (11 patents)Bert BobrovniczkyBert Bobrovniczky (11 patents)Samuel K-h NgSamuel K-h Ng (4 patents)Charles L HenritzyCharles L Henritzy (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Noma Inc. (9 from 37 patents)

2. Other (1 from 832,812 patents)


10 patents:

1. D379964 - Low profile lever-off plug

2. 5604436 - Christmas light string circuit tester

3. 5595439 - Decorative light strings and multi-purpose lampholders therefor

4. 5355288 - Lampholder and mounting means therefor

5. D305156 - Outdoor luminaire

6. 4826448 - Electrical connector

7. 4789570 - Artificial shrub

8. 4778409 - Screw in lamp holder

9. 4678153 - Trouble lamp and retainer

10. 4656320 - Cord reel

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idiyas.com
as of
12/18/2025
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