How to write the patent specifications of various commodities?

First of all, according to the functional proposition, it is "a device to protect household appliances (energy saving or other functions)".

Then, according to the differences between the drawings, structural features and circuit structure of the device and the prior art, the claims, specifications and drawings are sorted out according to the application format.

As for the characteristics of various available commodities, it can be expressed in several specific embodiments of the manual: how to apply the device to TV sets, refrigerators and air conditioners.

This effect is the best.

According to the landlord's idea, it is actually harmless, and the realization method is not limited to the scope of protection. The emphasis is on claims and inventions, and the technical fields, claims and inventions put forward in the specification should not be too limited.