John W. Hopkins

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Columbia, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for remote activation of equipment and demolition charges
- Patent number 6,546,873
- Issue date Apr 15, 2003
- The United States of America as represented by the Secretary of the Army
- Richard Andrejkovics
- F42 - AMMUNITION BLASTING
Information Patent Grant
Manually operated electrical generator apparatus
- Patent number 4,746,806
- Issue date May 24, 1988
- United States of America as represented by the Secretary of the Army
- Carl J. Campagnuolo
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...