Samuel R. Hall

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Magnolia, AR, US

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Patents Grantslast 30 patents

Information Patent Grant
Fire resistant dual layer bimetallic door frame
- Patent number 4,674,248
- Issue date Jun 23, 1987
- Alumax, Inc.
- Samuel R. Hall
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS