Here's the patent links...
Patent 3899144 (Powder Contrail Generation):
www.freepatentsonline.com/3899144.html
Patent 5003186 (Welsbach Seeding):
www.freepatentsonline.com/5003186.html
Patent 7582809 (Aluminum Resistant Seeds):
www.patents.com/us-7582809.html
No comments:
Post a Comment