Inventor Record

Wireless communications

Martin Cooper: inventions and patents

Known for First handheld cellular telephoneNationality Born in Chicago, Illinois, United StatesBorn 26 December 1928

Martin Cooper, born in Chicago in 1928, joined Motorola in 1954. On 3 April 1973 he made the first public call on a handheld cellular phone, the DynaTAC prototype, on a New York City street corner, according to the Marconi Society. He is one of eight named inventors on US Patent 3,906,166 for a radio telephone system, filed by Motorola in 1973 and granted in 1975.1,3,2

Patents

US 3,906,1662

Radio telephone system

Filed
17 October 1973
Granted
16 September 1975
Assignee
Motorola, Inc.
Co-inventors
Richard W. Dronsuth, Albert J. Leitich (printed as Albert J. Mikulski in the text version on Google Patents), Charles N. Lynk Jr., James J. Mikulski, John F. Mitchell, Roy A. Richardson, John H. Sangster

View the patent document

Inventions

Recognition

Sources

  1. The Marconi Society, Martin Cooper, 2013 (accessed 2026-10-27)
  2. Google Patents, US3906166A Radio telephone system (accessed 2026-10-27)
  3. Encyclopaedia Britannica, Martin Cooper (accessed 2026-10-27)