Someone here wrote that for patents do not count the truth and that any thing can be patented, even objects that can not work. This is a silly thing. Many patents on Cold Fusion were rejected precisely because the Examiner felt that the phenomenon upon which the operation of the described object was based had not been recognized by mainstream science. If IH filed that patent it is because they knew they had a worth technology and an IP that they did not want to lose.
You are wrong on several counts. In US patents the specs in a patents are not tested or ruled on by the PTO as being true or not. They do not have either the skill, expertise or resources to proof facts. They must take the information as given. The specs are to define terms and give an embodiment of the invention and show that it has some use. In this case, for example, in testing samples to see if they can produce excess. It does not say that the measurement taken are correct.
Also if you read the claims of the patents in question, you will find that the one filed by IH on behalf of Rossi, et al did not claim excess heat or power. The claims only covered a vessel for placing an active sample. The granting of the patent does not imply that the heat discussed in the patent was as reported. Much like getting a driver's license does not imply that you own an operating car.
Granting the patent in question only says that the items claimed are useful in some why (such as testing a sample). It did not claim excess heat so the PTO made no ruling on excess heat in any way.