[Pudwoppa]

Don't have my references to hand, but if memory serves:

The word 'Hydram' (now synonymous with Hydraulic Rams) was originally a trademark of Blakes. He didn't invent the Hydraulic Ram, but he did create a more successful/efficient version of it which he patented. The rams were renowned internationally, and were used in the gardens of the Taj Mahal (as Retlaw correctly said) and many other grand buildings around the world.