Charles D. Hayes

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Glen Burnie, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Punching device making large rectangular holes in rectangular tubin...
- Patent number 11,931,790
- Issue date Mar 19, 2024
- Charles D. Hayes
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Stackable, portable filing cabinet modules
- Patent number 4,668,029
- Issue date May 26, 1987
- Bernard L. Maizlish
- B60 - VEHICLES IN GENERAL