John L. DeRosa

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Upper Marlboro, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Quick change power tool chuck
- Patent number 8,851,812
- Issue date Oct 7, 2014
- John L. DeRosa
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Quick change power tool chuck
- Patent number 7,766,586
- Issue date Aug 3, 2010
- John L. DeRosa
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Quick change power tool chuck
- Patent number 6,880,832
- Issue date Apr 19, 2005
- John L. DeRosa
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Derosa router chuck
- Patent number 6,332,619
- Issue date Dec 25, 2001
- J. P. Walsh/J. P. Marmo Enterprises Inc.
- John L. DeRosa
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
QUICK CHANGE POWER TOOL CHUCK
- Publication number 20110121522
- Publication date May 26, 2011
- John L. DeRosa
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Quick change power tool chuck
- Publication number 20050184474
- Publication date Aug 25, 2005
- John L. DeRosa
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Quick change power tool chuck
- Publication number 20040113374
- Publication date Jun 17, 2004
- John L. DeRosa
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR