Hal P. Greenberger

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Hopedale, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Removable cooling apparatus for a hat
- Patent number 11,602,189
- Issue date Mar 14, 2023
- Hal P. Greenberger
- A42 - HEADWEAR
Information Patent Grant
Stethoscope with reduced susceptibility to interference from ambien...
- Patent number 6,028,942
- Issue date Feb 22, 2000
- Hal P. Greenberger
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
REMOVABLE COOLING APPARATUS FOR A HAT
- Publication number 20220256959
- Publication date Aug 18, 2022
- Hal P. Greenberger
- A42 - HEADWEAR