Inventor
SISSON PENELOPE R
GB7 patents
⚠️ This page may combine multiple inventors who share the name “SISSON PENELOPE R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NAT RES DEV
4 patentsUS4826490AMay 2, 1989
Safety device for hypodermic needle or the like
NAT RES DEV250 citations98
US5084030AJan 28, 1992
Safety device for hypodermic needle or the like
NAT RES DEV105 citations95
US4957490ASep 18, 1990
Injection device
NAT RES DEV87 citations95
US4990141AFeb 5, 1991
Single-use syringe
NAT RES DEV24 citations92
BRITISH TECH GROUP
3 patentsUS5601535AFeb 11, 1997
Safety device for hypodermic needle or the like
BRITISH TECH GROUP68 citations95
US5549572AAug 27, 1996
Safety device for hypodermic needle or the like
BRITISH TECH GROUP25 citations92
US5536257AJul 16, 1996
Safety device for hypodermic needle or the like
BRITISH TECH GROUP27 citations92