Christopher A. Armstrong

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Brownsville, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Process for manufacturing sealed round metal ductwork
- Patent number 9,074,709
- Issue date Jul 7, 2015
- Ductmate Industries, Inc.
- Vincent L. Bloom
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Sealing mechanism for ductwork
- Patent number 7,992,904
- Issue date Aug 9, 2011
- Ductmate Industries, Inc.
- Vincent L. Bloom
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Process for Manuafacturing Sealed Round Metal Ductwork
- Publication number 20150337999
- Publication date Nov 26, 2015
- DUCTMATE INDUSTRIES, INC.
- Vincent L. Bloom
- F24 - HEATING RANGES VENTILATING
Information Patent Application
Process for manufacturing sealed round metal ductwork
- Publication number 20110258852
- Publication date Oct 27, 2011
- DUCTMATE INDUSTRIES, INC.
- Vincent L. Bloom
- F24 - HEATING RANGES VENTILATING
Information Patent Application
Sealing Mechanism for Ductwork
- Publication number 20080303276
- Publication date Dec 11, 2008
- Vincent L. Bloom
- F24 - HEATING RANGES VENTILATING