https://patents.google.com/patent/US4214807A/en?oq=US4214807A
HOLOGRAPHIC
Optical
Satellite
Communication
System
Worldwide applications
Project Bluebeam?
https://patents.google.com/patent/US4214807A/en?oq=US4214807A
HOLOGRAPHIC
Optical
Satellite
Communication
System
Worldwide applications
Project Bluebeam?