Inventor

UNDERWOOD MARCOS A

US7 patents

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

GENRAD INC

2 patents

US4782324ANov 1, 1988

Digital signal synthesizer

GENRAD INC30 citations90

US4937535AJun 26, 1990

Calibration method and programmable phase-gain amplifier

GENRAD INC21 citations74

UNDERWOOD MARCOS A

2 patents

US5299459AApr 5, 1994

Adaptive control method for multiexciter sine tests

UNDERWOOD MARCOS A33 citations88

US10295434B2May 21, 2019

Direct field acoustic testing system, controls, and method

UNDERWOOD MARCOS A2 citations64

LARKIN PAUL ALAN

1 patent

US9109972B2Aug 18, 2015

Direct field acoustic testing system and method

LARKIN PAUL ALAN8 citations72

(unassigned)

1 patent

US5517426AMay 14, 1996

Apparatus and method for adaptive closed loop control of shock testing system

16 citations70

MSI DFAT LLC

1 patent

US12411056B2Sep 9, 2025

High output acoustic system for direct field acoustic testing

MSI DFAT LLC0 citations58