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For the Inventor, By the Inventor

Helsinki, Finland

Metra Oy Ab


USPTO Granted Patents = 1

Forward Citations = 16

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1 inventor (with patents filed for the assignee):

goldMedal Sven Oldfelt (1 out of 10 patents)


1 patent:

1. 5421040 - Vacuum toilet system (1995-06-06),
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USPTO Data Jan 1 1976 - Dec 9 2025

1 Patents

#321 in Helsinki

#1,468 in Finland

...
Helsinki, Finland

Metra Oy Ab

Forward Citations = 16

1 inventor:

goldMedal Sven Oldfelt (1 out of 10 patents)

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