Matthew V. Stonebraker Jr.

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Lafayette, IN, US

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Patents Grantslast 30 patents

Information Patent Grant
Push-to-fit earplug with tip cavity
- Patent number 11,304,851
- Issue date Apr 19, 2022
- 3M Innovative Properties Company
- Robert C. Coffin
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hearing protector
- Patent number D895901
- Issue date Sep 8, 2020
- 3M Innovative Properties Company
- Robert C. Coffin
- D29 - Equipment for safety, protection, and rescue
Information Patent Grant
Hearing protector
- Patent number D889754
- Issue date Jul 7, 2020
- 3M Innovative Properties Company
- Robert C. Coffin
- D29 - Equipment for safety, protection, and rescue

Patents Applicationslast 30 patents

Information Patent Application
PUSH-TO-FIT EARPLUG WITH TIP CAVITY
- Publication number 20200197224
- Publication date Jun 25, 2020
- 3M Innovative Properties Company
- Robert C. Coffin
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE