AT 37a

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We have a modest amount of Austrian material, generally, so it's hard to determine, but Austrian patent filings pertinent to infrastructure and more particularly hangars, perhaps most particularly those pertinent to airships, will likely fall into this classification. This classification came to us initially by way of Patent AT-1913-66316.

Enclosing categories Austrian patent classifications, AT 37
Subcategories
Keywords Infrastructure, Hangars
Start year
End year


This wiki has 7 patents in category "AT 37a".

Patents in category AT 37a