W
Wingknut
Guest
Just further to the possible early stealth patents in this thread here: http://www.secretprojects.co.uk/forum/index.php/topic,3583.60.html
Arthur Korn (et al), 'Means for altering the reflection of radar waves' (US 2436578).
Filed March 4th 1944, http://www.google.com/patents/US2436578
"According to the present invention devices and methods are provided, whereby the measurements by radar become less readily detected. This method in general consists in making the radar waves sent from their source strike upon reflecting surfaces which contain certain electrically semi-conducting material whereby the reflected radar waves are altered and cause thereby erroneous radar measurements."
Arthur Korn (et al), 'Means for altering the reflection of radar waves' (US 2436578).
Filed March 4th 1944, http://www.google.com/patents/US2436578
"According to the present invention devices and methods are provided, whereby the measurements by radar become less readily detected. This method in general consists in making the radar waves sent from their source strike upon reflecting surfaces which contain certain electrically semi-conducting material whereby the reflected radar waves are altered and cause thereby erroneous radar measurements."