US Patent #4686605 A
Method and apparatus for altering a region in the earth's atmosphere, ionosphere, and magnetosphere
Method and apparatus for altering a region in the earth's atmosphere, ionosphere, and magnetosphere
Is listed under United States Patent and Trademark Office classifications:
ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES
CRYPTOGRAPHY
ORDNANCE
AERONAUTICS AND ASTRONAUTICS
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Download PDF of Patent #4686605-A & full classification definitions