Robert C. Caldwell Jr.

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Grand Rapids, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
File cabinet container
- Patent number 6,830,159
- Issue date Dec 14, 2004
- Harbor Steel & Supply Corp.
- Robert C. Caldwell
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Carrousel file cabinet
- Patent number 6,588,865
- Issue date Jul 8, 2003
- Harbor Steel & Supply Corporation
- Robert C. Caldwell
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
File cabinet
- Patent number 6,419,332
- Issue date Jul 16, 2002
- Harbor Steel & Supply Corp.
- Robert C. Caldwell
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...

Patents Applicationslast 30 patents

Information Patent Application
Carrousel file cabinet
- Publication number 20030038569
- Publication date Feb 27, 2003
- Robert C. Caldwell
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Application
Carrousel file cabinet
- Publication number 20010017508
- Publication date Aug 30, 2001
- Robert C. Caldwell
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...