James N. Stevens

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Chicago, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for making a fluid filled ring
- Patent number 4,268,331
- Issue date May 19, 1981
- James N. Stevens
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Radially compressed rotary shaft sealing device
- Patent number 4,194,746
- Issue date Mar 25, 1980
- James N. Stevens
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...