Michael S. Hoffman

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Marblehead, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Elongated non-pivotable hook for hanging signs from ceiling anchors
- Patent number 6,036,153
- Issue date Mar 14, 2000
- Rose Displays Ltd.
- Sidney Rose
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Installation tool for hanging signs
- Patent number 5,938,255
- Issue date Aug 17, 1999
- Sidney Rose
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Elongated poster gripping device
- Patent number 5,863,019
- Issue date Jan 26, 1999
- Rose Displays, Ltd.
- Sidney Rose
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Poster gripping extrusion
- Patent number 5,718,402
- Issue date Feb 17, 1998
- Rose Displays Ltd.
- Michael S. Hoffman
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Suspended multi-sided message display signs
- Patent number 5,649,379
- Issue date Jul 22, 1997
- Rose Displays
- Michael S. Hoffman
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS