H. Strathmann filed for a patent on July 14th, 1961 and received German Patent #DE1174228 in 1964.

"Hakenschani" combines "Haken" (for piton) with a local Bavarian-Austrian slang word meaning something like a servant or helper. In the broader world, these are more commonly known as "Anneau Rectangulaire" meaning "rectangular ring" in French - undoubtedly due to their sale in some major French catalogs and outfitters. Some catalogs even sold the triangular version as "Anneau Rectangulaire" despite the obvious misnomer.

↑ Set 292, 374: Salewa Hakenschani.

• Made in West Germany [1960s].

↑ 292: Salewa Hakenschani.

• Made in West Germany [1960s].
• A piton carrier usually tied to an over-shoulder or waist cord.
• Design allows for easy one-handed piton removal or insertion.

↑ 374: Salewa Hakenschani.

• Made in West Germany [1960s].
• A piton carrier usually tied to an over-shoulder or waist cord.
• Design allows for easy one-handed piton removal or insertion.
• This one has a wider cord ring spacing than #292.

↑ 013: Salewa Hakenschani.

• Made in West Germany [1960s].
• A smaller piton carrier usually tied to an over-shoulder or waist cord.
• Design allows for easy one-handed piton removal or insertion.
• The triangular "Anneau Rectangulaire" came after the rectangular version.