Inventor

ALPERT DAVID J

US2 patents

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

RAFFEL SYSTEMS LLC

1 patent

US7766293B2Aug 3, 2010

Lighted cup holder for seating arrangements

RAFFEL SYSTEMS LLC37 citations92

(unassigned)

1 patent

US5787055AJul 28, 1998

Changeable wall clock

26 citations84