You can find information regarding a Stabilus Lift-o-Mat PTL gas spring at Stabilus.com. While product details and applications are available, no catalogue appears to be on offer.
The Lift-O-Mat PTL gas spring is built with a self-stop function based on the ballpoint pen principle (it has a gas spring to enable stopping in the compressed position). The company claims that the device has stood the test of time in conceptually modern and unique designer and utilitarian furniture. In the compressed position, the locking system holds the gas spring. A gentle push on the gas spring extends it without noise and requires only minimal effort. It is easy and convenient to use and eliminates the need for additional fixing elements.