AAA Sales + Engineering, Inc.

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Oak Creek, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Bladder-actuated railroad retarder
- Patent number 7,530,432
- Issue date May 12, 2009
- AAA Sales + Engineering, Inc.
- Thomas J Heyden
- B61 - RAILWAYS
Information Patent Grant
Bladder actuator for a railroad retarder
- Patent number 7,392,887
- Issue date Jul 1, 2008
- AAA Sales + Engineering, Inc.
- Thomas J. Heyden
- B61 - RAILWAYS
Information Patent Grant
Fail-safe, weight-responsive skate retarder
- Patent number 7,306,077
- Issue date Dec 11, 2007
- AAA Sales + Engineering, Inc.
- Thomas J. Heyden
- B61 - RAILWAYS