Automotive arm signal and brake signal

Besides her film career, Lawrence is credited with designing the first "auto signaling arm", a predecessor of the modern turn signal, along with the first mechanical brake signal. She did not patent these inventions, however, and as a result she received no credit for, nor profit from, either one

Mechanical signaling arm & brake signal

Category:
Automotive

Completion Status:
yes

Patent Number:
N/A

Co-Inventor:
none