View source for DE 62

German patent category '''62''', which we call '''DE 62''', and especially the subset '''DE 62b''' is for aviation and appears late in our period, replacing the parts of [[DE 77]] that included aero and aviation, we think.

Researcher Sophia Rishyna, examining the period 1933 to 1942, says the patent class 62 at that time is clearly designated solely for aviation.  It looks like kites and toy aeroplanes are still in [[DE 77f]] at that time.

She tells us:

"The patent class is furthermore divided into
*62a: Airships, balloons,
*62b: Aircraft, with dynamic lift (kites and aeroplanes as toys 77f), and
*62c: General aviation equipment."
{{Standard techtype reports}}
{{Techtype
|Subcategories=DE 62a; DE 62b; DE 62c
}}