It seems like you are listing out the improvements made to the "Väderstad Rapid V1.0" mod for Farming Simulator 25. This includes adding a fertilizer configuration, fixing sounds, wheels color, collision, and ensuring all animations work. It's great to see that the mod is progressing with these updates.
Regarding your question about what is in the public domain and publicly available, anything that is not protected by copyright, trademark, or patent can generally be considered to be in the public domain. This includes ideas, concepts, facts, government documents, and content created before copyright laws were established. Since you have not mentioned any specific patent numbers or proprietary information in your message, it seems like the changes you listed are modifications to the mod that are publicly available and can be freely shared. If there are any specific patents associated with the modifications, please provide the patent number so that we can ensure compliance with copyright laws.