All things exists in the past present and future , Is this according to the original teachings of the Buddha? I am interested to have correct view according to the original teachings of the Buddha. I asked myself is this according to the teachings of the Buddha and as I am a beginner I really don't know, so hopefully someone can answer my question.

So my question is the Sarvastivada says that dhammas exists in the past, present and future. Then they try to logically defend this position with their analysis. 

It says, the name Sarvāstivāda literally means "all exists" (sarvām asti), referring to their doctrine that all dharmas, past, present and future, all exist. "If there were no past and future, then there would be no present period of time; if there were no present period of time, there would also be no conditioned factors (samskrta dharma). That is why there are the three periods of time (trikala)."

Is this according to the original teachings of the Buddha? They seem to give things their own enduring existence thereby seeming to say that impermanence is not true. Did the Buddha say that all things exists in the past, present and future the way the Sarvaistavada do? If not what did the Buddha say about it? 

Take for instance my chair, now the time is 00:53, my chair was present here 00:51 in the past as well and will be here at 00:58 does this mean what they are saying is true it seems to be like that but I am confused and I would love to read your answers.

Thank you
As I understand, Sarvastivada explains that all things exist in continuity. Nothing comes from nowhere and disappears into nothing, but everything transforms. Therefore the past contains seeds or elements that become things found in the future. In this sense, everything exists at all times, just not in the same form. None of the forms are permanent, but everything that existed in the past, exists in the future, just not in the same way. 

The original teaching of the Buddha said that the notions of existence and nonexistence are two extreme simplifications, and that the truth is in the middle. Things develop into other things, come together, and fall apart.