Different machines and different accessories can apply for patents.
Patents are divided into three main parts: technical problems, technical means and technical effects.
Different machines and different accessories mean different technical means. Even if the products processed by this machine can solve the same technical problems and achieve the same technical effect, they are all in line with the patent application conditions.
Only if the above three parts are identical or similar can they be regarded as identical or similar patents, and no patent right can be granted. In addition, authorization should be given.
After all, all roads lead to Rome, and different machines have different accessories, which can also achieve similar technical effects by different routes. The state encourages invention and creation.