Robert M Callahan

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Boones Mill, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Systems, devices, and/or methods for building construction
- Patent number 11,473,299
- Issue date Oct 18, 2022
- Robert M. Callahan
- E04 - BUILDING
Information Patent Grant
Systems, devices, and/or methods for managing joists
- Patent number 10,519,657
- Issue date Dec 31, 2019
- Robert M. Callahan
- E04 - BUILDING
Information Patent Grant
Systems, devices, and/or methods for managing deck installation
- Patent number 10,060,118
- Issue date Aug 28, 2018
- Robert M. Callahan
- E04 - BUILDING
Information Patent Grant
Joist reinforcing bracket
- Patent number 7,347,031
- Issue date Mar 25, 2008
- Robert M. Callahan
- E04 - BUILDING

Patents Applicationslast 30 patents

Information Patent Application
Systems, Devices, and/or Methods for Building Construction
- Publication number 20220349179
- Publication date Nov 3, 2022
- Robert M. Callahan
- E04 - BUILDING
Information Patent Application
Systems, Devices, and/or Methods for Managing Deck Installation
- Publication number 20170298611
- Publication date Oct 19, 2017
- Robert M. Callahan
- E04 - BUILDING
Information Patent Application
Reinforced girder
- Publication number 20110036050
- Publication date Feb 17, 2011
- Robert M Callahan
- E04 - BUILDING
Information Patent Application
Reinforced girder
- Publication number 20110036052
- Publication date Feb 17, 2011
- Robert M Callahan
- E04 - BUILDING
Information Patent Application
Reinforced girder
- Publication number 20110036051
- Publication date Feb 17, 2011
- Robert M Callahan
- E04 - BUILDING
Information Patent Application
Joist reinforcing bracket
- Publication number 20060130425
- Publication date Jun 22, 2006
- Robert M. Callahan
- E04 - BUILDING