Inventor

HOTVET DAVID A

US4 patents

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

MINNESOTA MINING & MFG

2 patents

US5550923AAug 27, 1996

Directional ear device with adaptive bandwidth and gain control

MINNESOTA MINING & MFG145 citations94

US4827525AMay 2, 1989

Attachment device for a probe microphone

MINNESOTA MINING & MFG39 citations88

TELEX COMMUNICATIONS

1 patent

US4718099AJan 5, 1988

Automatic gain control for hearing aid

TELEX COMMUNICATIONS68 citations92

3M INNOVATIVE PROPERTIES CO

1 patent

US9636259B2May 2, 2017

Water resistant acoustic port in ear-mouthed hearing device

3M INNOVATIVE PROPERTIES CO3 citations71