An African-American didn't invent the helicopter.
In Stanford, Conn.
Igor Sikorski invented the first helicopter. The inventor designed the helicopter to use solar power as a means of energy.
no, he did not invent the helicopter He invented the Gramaphone and the early microphone Hope that this answer helps you!
Many people, but Igor Sikorski made the first successful one.
for transpertation
Igor Sikorski invented helicopter in the year 1906.
where did
Yes
HELICOPTER
the helicopter
the first helicopter using sticks a 24 power engine and other products