Charles S. Bartlett

Person

Clinton, MD, US

People

Patents Grantslast 30 patents

Information Patent Grant
Telephonic handset apparatus having an earpiece monitor and reduced...
- Patent number 6,163,610
- Issue date Dec 19, 2000
- Lucent Technologies Inc.
- Charles Spurgeon Bartlett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Differential microphone assembly with passive suppression of resona...
- Patent number 5,745,588
- Issue date Apr 28, 1998
- Lucent Technologies Inc.
- Charles Spurgeon Bartlett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Baffled microphone assembly
- Patent number 5,539,834
- Issue date Jul 23, 1996
- AT&T Corp.
- Charles S. Bartlett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Single diaphragm second order differential microphone assembly
- Patent number 5,511,130
- Issue date Apr 23, 1996
- AT&T Corp.
- Charles S. Bartlett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Noise-cancelling telephone handset
- Patent number 5,491,747
- Issue date Feb 13, 1996
- AT&T Bell Corp.
- Charles S. Bartlett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Noise-canceling differential microphone assembly
- Patent number 5,473,684
- Issue date Dec 5, 1995
- AT&T Corp.
- Charles S. Bartlett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone headset structure for reducing ambient noise
- Patent number 5,343,523
- Issue date Aug 30, 1994
- AT&T Bell Laboratories
- Charles S. Bartlett
- G10 - MUSICAL INSTRUMENTS ACOUSTICS

Charles S. Bartlett

Person

Patents Grantslast 30 patents

Telephonic handset apparatus having an earpiece monitor and reduced...

Differential microphone assembly with passive suppression of resona...

Baffled microphone assembly

Single diaphragm second order differential microphone assembly

Noise-cancelling telephone handset

Noise-canceling differential microphone assembly

Telephone headset structure for reducing ambient noise