Posted on Mon, Nov. 25, 2002 A not quite purr-fect projectDespite selling only 12 of his pet doorbells, Tony Vena remains optimistic.By Reid KanaleyInquirer Staff Writer When Phoenix, a 9-year-old tabby cat, wants in or out of the house, he rings the doorbell.By pawing at special switches mounted cat-high inside and outside of his Vincentown, N.J., house, loud chimes announce Phoenix's need for egress or ingress.The cat's owner, Tony Vena, 72, a talkative former Philadelphia parking lot operator now living in busy semi-retirement, thinks he is on to something with that doorbell - which he invented with an eye...