Growing community of inventors

Evanston, IL, United States of America

Charles A Harrison

Average Co-Inventor Count = 2.40

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 = 9

Charles A HarrisonBuckley A Singletary (1 patent)Charles A HarrisonOliver W Masterson (1 patent)Charles A HarrisonBruce P Dunckel (1 patent)Charles A HarrisonCharles A Harrison (2 patents)Buckley A SingletaryBuckley A Singletary (3 patents)Oliver W MastersonOliver W Masterson (1 patent)Bruce P DunckelBruce P Dunckel (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sears, Roebuck & Company (2 from 65 patents)

2. National Service Industries, Inc. (1 from 55 patents)


2 patents:

1. D261851 - Housing for hand vacuum and the like

2. D252772 - Lighting fixture

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as of
12/20/2025
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