John C. Wren

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Flowery Branch, GA, US

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Patents Grantslast 30 patents

Information Patent Grant
Measuring harvested energy using an ultra-low duty cycle measuremen...
- Patent number 10,438,978
- Issue date Oct 8, 2019
- Sargent Manufacturing Company
- Mark Bryla
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Electronic lock with power failure control circuit
- Patent number 9,896,866
- Issue date Feb 20, 2018
- Sargent Manufacturing Company
- Mark Bryla
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Measuring Harvested Energy Using an Ultra-Low Duty Cycle Measuremen...
- Publication number 20170278880
- Publication date Sep 28, 2017
- ASSA ABLOY INC.
- Mark Bryla
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER