For the Inventor, By the Inventor

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Grande Prairie, Canada

Avalon Research Ltd.

USPTO Granted Patents = 3

CIPO Patents = 1

Forward Citations = 32

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4 inventors (with patents filed for the assignee):

George L Coad (2 out of 13 patents)

Trevor Rosten (1 out of 3 patents)

Derek Kitchen (1 out of 3 patents)

4. Douglas Rosten (1 out of 2 patents)

3 patents: Sort by Forward Citations

1. 11299957 - Plug for a coiled tubing string (2022-04-12),

2. 4589380 - Cyclic dwell engine (1986-05-20),

3. 4491095 - Cyclic dwell engine (1985-01-01),

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USPTO Data Jan 1 1976 - Dec 16 2025

3 Patents

#2 in Grande Prairie

#4,253 in Canada

Grande Prairie, Canada

Avalon Research Ltd.

Forward Citations = 32

4 inventors:

George L Coad (2 out of 13 patents)

Trevor Rosten (1 out of 3 patents)

Derek Kitchen (1 out of 3 patents)

4. Douglas Rosten (1 out of 2 patents)

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