Robert H. Kelsey

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Acton, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Electric cell with zinc coil anode and method of making it
- Patent number 4,007,054
- Issue date Feb 8, 1977
- P. R. Mallory & Co., Inc.
- Nikola Marincic
- H01 - BASIC ELECTRIC ELEMENTS