For the Inventor, By the Inventor

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Luxembourg, Luxembourg

Studor S.a.

USPTO Granted Patents = 3

CIPO Patents = 1

EPO Patents = 4

Trademarks = 10

Forward Citations = 11

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4 inventors (with patents filed for the assignee):

Kurt Sture Birger Ericson (2 out of 2 patents)

David Paul Campbell (1 out of 3 patents)

Han Sin Low (1 out of 1 patent)

4. John Swaffield (1 out of 2 patents)

5. Thomas W Trueb (22 patents)

6. David Campbell (4 patents)

7. Kam Yoon Leong (0 patent)

3 patents: Sort by Forward Citations

1. 8567434 - Closing and sealing means for air admittance valves in sanitary waste water pipe systems (2013-10-29),

2. 7908685 - Water trap for sanitary appliances (2011-03-22),

3. 7025092 - Positive air pressure attenuation device for drainage systems (2006-04-11),

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USPTO Data Jan 1 1976 - Jan 6 2026

3 Patents

#154 in Luxembourg

#229 in Luxembourg

Luxembourg, Luxembourg

Studor S.a.

Forward Citations = 11

4 inventors:

Kurt Sture Birger Ericson (2 out of 2 patents)

David Paul Campbell (1 out of 3 patents)

Han Sin Low (1 out of 1 patent)

4. John Swaffield (1 out of 2 patents)

5. Thomas W Trueb (22 patents)

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