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Home › Inventors › Ernst Hackenberg

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Ernst Hackenberg — 1 Patent

Fohnsdorf, AT: #6 of 13 inventorsTop 50%

Overall (All Time): #2,406,284 of 4,157,543Top 60%

1 Patents All Time

Ernst Hackenberg has been granted 1 US patent. All of these patents were granted in 2005. Ernst Hackenberg ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Ernst Hackenberg in Fohnsdorf, AT.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6851225	Device for equalizing changes in level between a ground area surface and a frame for a manhole cover, and a method for mounting the device	Egon Haar	2005-02-08

Ernst Hackenberg — 1 Patent

Issued Patents All Time

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