Inventor

GROFF STEVEN M

US3 patents

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

DUAN JIWU

2 patents

US8138625B2Mar 20, 2012

Dual line active automatic transfer switch

DUAN JIWU11 citations76

US8338982B2Dec 25, 2012

Apparatus to maintain redundancy in four line system

DUAN JIWU2 citations56

IBM

1 patent

US9608430B2Mar 28, 2017

Battery circuit fault protection in uninterruptable power sources

IBM6 citations68