Growing community of inventors

San Francisco, CA, United States of America

Duane E Harrington

Average Co-Inventor Count = 1.25

ph-index = 4

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 = 83

Duane E HarringtonGeorge Spector (1 patent)Duane E HarringtonMerritt A Robinson (1 patent)Duane E HarringtonDuane E Harrington (5 patents)George SpectorGeorge Spector (695 patents)Merritt A RobinsonMerritt A Robinson (7 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (5 from 832,812 patents)


5 patents:

1. 4312295 - Cat box litter screening device

2. 4259140 - Paper wiring apparatus

3. 4250649 - D Bite lite

4. 4242170 - Paper wiring transport apparatus and process

5. 4033358 - Integral cigarette paper holder element

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as of
12/20/2025
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