STEP﹟17 - I brevetti

BREVETTO US4445118A - Navigation system and method

The United States of America, n°4,445,118, 24 aprile 1984

BREVETTO US4667203A - Method and system for determining position using signals from satellites

Aero Space Div, n°4,667,203, 19 maggio 1987

BREVETTO US4785463A - Digital global positioning system receiver

Motorola Inc., n°4,785,463, 15 novembre 1988

fonti:

https://worldwide.espacenet.com/patent/search/family/023013813/publication/US4445118A?f=oprid%3Ain%3D19780101-20201231&q=ta%20%3D%20%22global%22%20AND%20ta%20%3D%20%22positioning%22%20AND%20ta%20%3D%20%22system%22

https://worldwide.espacenet.com/patent/original-document?channel=espacenet_channel-3c11cef0-5a63-4850-adfd-c3e236f55227

https://worldwide.espacenet.com/patent/search/family/025092875/publication/US4785463A?f=oprid%3Ain%3D19780101-20201231%7Cpublications.lang%3Ain%3Den%2Cde%2Cfr%2Ces%7Cpublications.cc%3Ain%3Dus&q=ta%20%3D%20%22global%22%20AND%20ta%20%3D%20%22positioning%22%20AND%20ta%20%3D%20%22system%22