Hearing Protection LLC
Doing business as Griffin Armament
At a glance
Employees20-99
In business sinceNot reported
HeadquartersWatertown, WI
US patents5
SAM.gov UEIU147QUXLJDJ1
CAGE code5Z5T9
Incorporated inWI
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Patents
5 US design patents granted 2017–2023, 1 of them in the five years to SEP 2025.
- Telescopic sight mount for firearmsUS D992673 · granted JUL 18, 2023
- Muzzle brakeUS D883420 · granted MAY 5, 2020
- Firearm suppressorUS D792545 · granted JUL 18, 2017
- Charging handle for a firearmUS D781986 · granted MAR 21, 2017
- Firearm suppressorUS D776226 · granted JAN 10, 2017
Granted to Hearing Protection LLC · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Hearing Protection LLC | Watertown | WI | 20–99 | LIKELY ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.