Inventor

DUNCAN ROBERT H

US3 patents

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

ITT

2 patents

US4406926ASep 27, 1983

Telephone station circuit using digital tone generation

ITT12 citations67

US4496799AJan 29, 1985

Handsfree telephone instrument using digital dial

ITT17 citations63

BENCHMARK PERFORMANCE GROUP INC

1 patent

US7879771B2Feb 1, 2011

Non-flammable, non-aqueous group IVB metal alkoxide crosslinkers and fracturing fluid compositions incorporating same

BENCHMARK PERFORMANCE GROUP INC0 citations39