CH 54a

This rare or at least not very aero-comprehensive Swiss patent classification came to us via the work of Nazaire Lacrotte, though the work upon which this the Swiss patent in question is based has solidly aeronautical classification, in France.

Enclosing categories	Swiss patent classifications, CH 54
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This wiki has 1 patents in category "CH 54a".

Patents in category CH 54a

• Patent CH-1913-67263 (English title: Combination pneumatique outfit for pilots, motorists and others, Inventors: Nazaire Lacrotte, Supplementary to patent: Patent FR-1912-450892 • Patent FR-1913-450892.17436, Filing date: 1913-10-27)