Inventor

MANCHESTER DOUGLAS L

US5 patents

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

VERIFONE INC

2 patents

US8954750B2Feb 10, 2015

Secure PIN entry device

VERIFONE INC1 citations60

US9792803B2Oct 17, 2017

Secure PIN entry device

VERIFONE INC0 citations50

HEWLETT PACKARD DEVELOPMENT CO

1 patent

US6588660B1Jul 8, 2003

Passive contactless smartcard security system

HEWLETT PACKARD DEVELOPMENT CO252 citations92

BARROWMAN JOHN HENRY

1 patent

US8621235B2Dec 31, 2013

Secure pin entry device

BARROWMAN JOHN HENRY6 citations77

HALCYON INC

1 patent

USD272355SJan 24, 1984

Data transmission multiplexer control panel

HALCYON INC9 citations62