Growing community of inventors

Detroit, MI, United States of America

Harold W Carlson

Average Co-Inventor Count = 1.00

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

Harold W CarlsonHarold W Carlson (4 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (2 from 832,761 patents)

2. Brown Group Recreational Products, Inc. (1 from 15 patents)

3. Brown Group Recreational Industries, Inc. (1 from 1 patent)


4 patents:

1. D270927 - Child's outdoor play gym

2. D263983 - Child's outdoor play gym

3. 4204708 - Door latch assembly

4. 4085782 - Vaccine and medicament dispensing system

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as of
12/17/2025
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