In the 1950s the pedal bike had already been invented, and in current production - so it couldn't be invented again. There were several companies (Schwinn is one) that manufactured bikes back then.
Leonardo da Vinci
Leonardo da Vinci invented push bikes
If by "pettle" you mean pedal bikes, then yes, there are pedal bikes in Japan.
Pedal bikes don't have flywheels, but a motorcycle will have one. Pedal bikes have freewheels though.
Bikes are obvious ones.
Gary Turner invented gt bikes
700,000
pedal pushers
In the 1950s
in the 1950s
Electric bikes, or e-bikes, are bicycles that have an electric motor that can assist the rider. There are two main types of e-bikes: pedal assist and throttle. Pedal assist e-bikes require the rider to pedal in order to activate the motor, while throttle e-bikes can be powered without pedaling by using a throttle mechanism on the handlebar. However, the level of assistance and the maximum speed of the motor are limited by law in many countries, and pedaling is often necessary for safe and legal operation. Therefore, electric bikes do involve pedaling, but the amount and difficulty of pedaling depend on the type of e-bike and the riderβs preference.
They were never actually made in the U.S. until the mid-1950s.
bikes
Pedal Pushers were invented in the late 1940's by American designer DeDe Johnson.