For the Inventor, By the Inventor

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Tampere, Finland

Oy Winrock Technology, Ltd.

USPTO Granted Patents = 1

Forward Citations = 4

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2 inventors (with patents filed for the assignee):

Harri Sjoholm (1 out of 2 patents)

Risto Wisakanto (1 out of 3 patents)

1 patent: Sort by Forward Citations

1. 5823274 - Drill rod (1998-10-20),

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USPTO Data Jan 1 1976 - Dec 16 2025

1 Patents

#107 in Tampere

#1,468 in Finland

Tampere, Finland

Oy Winrock Technology, Ltd.

Forward Citations = 4

2 inventors:

Harri Sjoholm (1 out of 2 patents)

Risto Wisakanto (1 out of 3 patents)

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