Debunked: 1975 U.S. Patent for powder contrail generation.
Hi guys, new here. Some chemtrailers have thrown this link at me about some kind of contrail producer patented in 1975. There was nothing mentioned about it on this website so I thought I might ask if any forumgoers here have any knowledge on this subject?
It's a patent (3899144) for creating a visible trail on a towed target (a target towed behind another plane, and used for target practice). Normally they use smoke created with heat from the engine to create a visible trail, but in the towed target there is no heat source.
The entire aim of the patent is to create the VISUAL of a conrail.