Variable Duration Bicycle Bell
Автокөліктер мен көлік құралдары
My invention! You can ring for whatever duration you want, as long as you hold down the button. Only needs to be wound occasionally.
My invention! You can ring for whatever duration you want, as long as you hold down the button. Only needs to be wound occasionally.
Пікірлер: 1
I wouldn't worry about getting a patent :)