When did Fernand Petzl begin his caving career?
Who did Fernand Petzl collaborate with to improve the technology behind caving?
What are some notable climbing achievements of the Petzl Team members?
When was the Petzl corporation established?
Who are the members of the Petzl Team?
What was the first brand name headlamp produced by Petzl?
What was the first nylon rope designed by Pierre Chevalier used for?