One who commits a trespass to a chattel is subject to liability to the possessor of the chattel if, but only if,
- he dispossesses the other of the chattel, or
- the chattel is impaired as to its condition, quality, or value, or
- the possessor is deprived of the use of the chattel for a substantial time, or
- bodily harm is caused to the possessor, or harm is caused to some person or thing in which the possessor has a legally protected interest.