RU 62

This category encompassed Воздухоплаваняяіе, aeronautics, in two subcategories, RU 62a and RU 62b. It may be that these are for lighter-than-air and heavier-than-air vessels, respectively.

Category 62, with new subdivisions introduced later, continued in use under the Soviet Union.

Enclosing categories	Russian patent classifications, Soviet patent classifications
Subcategories	RU 62a, RU 62b
Keywords
Start year	1913
End year