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For the Inventor, By the Inventor

Bern, Switzerland

Vsl International Ltd


USPTO Granted Patents = 3


Trademarks = 1

Forward Citations = 11

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8 inventors (with patents filed for the assignee):

goldMedal John Richard Crigler (2 out of 3 patents)

silverMedal Leonhard Weixler (1 out of 16 patents)

bronzeMedal Olivier Pierre Dominique Haye (1 out of 1 patent)

4.  Philippe Manuel De Sousa (1 out of 1 patent)

5.  Ludwig Andreas Huber (1 out of 10 patents)

6.  Donald Paul Kline (1 out of 1 patent)

7.  Daniel Wallace Falconer (1 out of 1 patent)

8.  Robert Duncan Lapsley (1 out of 1 patent)

9.  Brian Arthur Cavill (1 patent)


3 patents:

1. 10822767 - Trench wall apparatus and method for creating a trench in the ground (2020-11-03),
2. 6209274 - Vent flow apparatus and method (2001-04-03),
3. 5939003 - Post-tensioning apparatus and method (1999-08-17),
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USPTO Data Jan 1 1976 - Dec 16 2025

3 Patents

#32 in Bern

#2,332 in Switzerland

...
Bern, Switzerland

Vsl International Ltd

Forward Citations = 11

8 inventors:

goldMedal John Richard Crigler (2 out of 3 patents)

silverMedal Leonhard Weixler (1 out of 16 patents)

bronzeMedal Olivier Pierre Dominique Haye (1 out of 1 patent)

4.  Philippe Manuel De Sousa (1 out of 1 patent)

5.  Ludwig Andreas Huber (1 out of 10 patents)

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