Company Portfolio

Motorola Inc

Patents indexed

Year range

1975

telecommunicationsconsumer_electronicssoftwaresemiconductors

Key Inventors

Martin Cooper1 Richard W Dronsuth1 Albert J Leitich1 Jr Charles N Lynk1 James J Mikulski1 John F Mitchell1 Roy A Richardson1 John H Sangster1

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1 patents, in 1975

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1975 — How Early Cell Phones Handled Calls Across Different Towers

US 3906166·1975

How Early Cell Phones Handled Calls Across Different Towers

This patent describes a system for early portable phones to automatically find the strongest signal from a base station and switch channels as the user moves, reducing battery drain and interference.

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Motorola Inc

1 patents, in 1975

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