Stephen Roehrig

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Plainfield, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Linestops, nozzles and completion plugs for installation in pressur...
- Patent number 9,829,141
- Issue date Nov 28, 2017
- Hydra-Stop LLC
- Christopher C. Vazzana
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Gate valves for installation in pressurized pipes
- Patent number 9,644,779
- Issue date May 9, 2017
- Hydra-Stop LLC
- Christopher C. Vazzana
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
GATE VALVES FOR INSTALLATION IN PRESSURIZED PIPES
- Publication number 20150247578
- Publication date Sep 3, 2015
- ADS LLC
- Christopher C. Vazzana
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Linestops, Nozzles and Completion Plugs for Installation in Pressur...
- Publication number 20150247602
- Publication date Sep 3, 2015
- ADS LLC
- Christopher C. Vazzana
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...