Inventor

PERRIN DAVID A

US3 patents

⚠️ This page may combine multiple inventors who share the name “PERRIN DAVID A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ZEN DESIGN GROUP LTD

2 patents

US6995542B2Feb 7, 2006

Battery charger amusement device

ZEN DESIGN GROUP LTD21 citations88

US7679320B2Mar 16, 2010

Amusement apparatus operative as a dynamo battery charger

ZEN DESIGN GROUP LTD2 citations58

ZEN DESIGN GROUP INC

1 patent

US6896390B2May 24, 2005

Animate form headlamp

ZEN DESIGN GROUP INC3 citations52