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For the Inventor, By the Inventor

Stavanger, Norway

Hammergy As


USPTO Granted Patents = 2


Forward Citations = 0

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1 inventor (with patents filed for the assignee):

goldMedal Per A Vatne (2 out of 18 patents)


2 patents:

1. 10400513 - Fluid pressure driven, high frequency percussion hammer for drilling in hard formations (2019-09-03),
2. 10385617 - High frequency fluid driven drill hammer percussion drilling in hard formations (2019-08-20),
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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#48 in Stavanger

#717 in Norway

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Stavanger, Norway

Hammergy As

Forward Citations = 0

1 inventor:

goldMedal Per A Vatne (2 out of 18 patents)

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