Edward J. Steigerwalt

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Lehighton, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for perforating or cutting with a solid fueled...
- Patent number 4,446,920
- Issue date May 8, 1984
- Air Products and Chemicals, Inc.
- Andrew J. Woytek
- E21 - EARTH DRILLING MINING
Information Patent Grant
Removal of dinitrogen difluoride from nitrogen trifluoride
- Patent number 4,193,976
- Issue date Mar 18, 1980
- Air Products and Chemicals, Inc.
- John T. Lileck
- C01 - INORGANIC CHEMISTRY