Look at this part number. DVWCL-153PH-WH. It says that it will work for three way switches. Put a dimmer at one end of the circuit, a regular 3 way switch (maybe with dimmer) at the other end, and a four way switch in the middle. You don't need all four way switches to make this work, the ones at the end can be 3 way. With four way switches, you could theoretically control it from any number of locations, it is not limited to three locations.
TM874WCC6 - four way switch.
I am not sure about a dimmer at each end of the circuit, sounds like something that you would have to try and see if it works. Put a couple of dimmers on the bench, and wire them up to a light, you will find out quickly enough if you can have two dimmers on one circuit, and if so, how they will work.
There are other ways to do this, with low voltage or wireless signaling, and that might work better for you. I am describing the traditional system, low tech.
This part number is for wireless technology. P-PKG1W-WH