Inventor

CRANFORD RICHARD

US3 patents

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

(unassigned)

1 patent

US5629679AMay 13, 1997

Personal security device

76 citations88

VAPERMA INC

1 patent

US7556677B2Jul 7, 2009

Solvent resistant asymmetric integrally skinned membranes

VAPERMA INC10 citations77

CRANFORD RICHARD

1 patent

USD376766SDec 24, 1996

Hand-held personal security device for emitting a chemical spray as well as providing an audible alarm and a light

CRANFORD RICHARD11 citations63