RU 62a

Tentatively it seems this classification applies to lighter-than-air aeronautics.

Enclosing categories	RU 62, Russian patent classifications
Subcategories
Keywords	LTA
Start year	1913
End year

This wiki has 2 patents in category "RU 62a".

Patents in category RU 62a

• Patent RU-1909-27293 (English title: Airplane, Inventors: Todd Churchill Woodworth, Filing date: 1909-01-12)
• Patent RU-1912-26171 (English title: Oblong aerostat, Inventors: Johann Schütte, Supplementary to patent: Patent DE-1911-258741, Filing date: 1912-03-22)