Growing community of inventors

Somerville, AL, United States of America

Attle D Johnson

Average Co-Inventor Count = 2.00

ph-index = 1

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 = 18

Attle D JohnsonGary Grantland (2 patents)Attle D JohnsonAttle D Johnson (2 patents)Gary GrantlandGary Grantland (14 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Palco Telecom Inc. (2 from 11 patents)


2 patents:

1. 4903294 - Low voltage operated coin relay

2. 4896348 - Paystation monitor circuit to prevent fraudulent use

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as of
1/19/2026
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