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Nashua, NH, United States of America

Thomas M Duff, Jr

Average Co-Inventor Count = 2.18

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 = 599

Thomas M Duff, JrCharles C Schelberg, Jr (4 patents)Thomas M Duff, JrStephan Condodemetraky (1 patent)Thomas M Duff, JrThomas M Duff, Jr (4 patents)Charles C Schelberg, JrCharles C Schelberg, Jr (5 patents)Stephan CondodemetrakyStephan Condodemetraky (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Poweroasis Limited (3 from 7 patents)

2. Powertel, Inc. (1 from 1 patent)


4 patents:

1. 6721400 - Power and telecommunications access vending machine

2. 6466658 - Power and telecommunications access vending machine

3. 6314169 - Power and telecommunications access vending machine

4. 5812643 - Power and telecommunications access vending machine

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as of
12/17/2025
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