Inventor

LETT JOHN B W

US2 patents

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

NOVARTIS AG

1 patent

US6808262B2Oct 26, 2004

Multifocal contact lens with aspheric surface

NOVARTIS AG388 citations95

(unassigned)

1 patent

US6457826B1Oct 1, 2002

Multifocal aspheric lens

409 citations92