Charles Engelstein

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New York, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Top loading battery holder
- Patent number 11,018,394
- Issue date May 25, 2021
- Memory Protection Devices, Inc.
- Thomas Blaha
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Top loading battery holder
- Patent number 10,333,116
- Issue date Jun 25, 2019
- Memory Protection Devices, Inc.
- Thomas Blaha
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Battery holder for printed circuit board
- Patent number 9,192,059
- Issue date Nov 17, 2015
- Memory Protection Devices, Inc.
- Thomas Blaha
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Horizontal battery holder for cylinder cells
- Patent number 4,495,257
- Issue date Jan 22, 1985
- Memory Protection Devices, Inc.
- Charles Engelstein
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Battery holder for coin cells
- Patent number 4,487,820
- Issue date Dec 11, 1984
- Memory Protection Devices, Inc.
- Charles Engelstein
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
TOP LOADING BATTERY HOLDER
- Publication number 20190273229
- Publication date Sep 5, 2019
- MEMORY PROTECTION DEVICES, INC.
- Thomas Blaha
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
TOP LOADING BATTERY HOLDER
- Publication number 20180198100
- Publication date Jul 12, 2018
- MEMORY PROTECTION DEVICES, INC.
- Thomas Blaha
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
BATTERY HOLDER FOR PRINTED CIRCUIT BOARD
- Publication number 20120251864
- Publication date Oct 4, 2012
- Memory Protection Devices, Inc.
- Thomas Blaha
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR