AT 77b

From Inventing aviation
Jump to navigation Jump to search

Classe/Klasse 77: Sport, Spiele, Volksbelustigung, Luftschiffahrt

77b: ?

A toy airplane with classic hand-turned 'rubber band' propulsion was classified as 77b.

This wiki has 3 patents in category "AT 77b".

Patents in category AT 77b

Enclosing categories AT 77
Start year
End year