Alfred Hackmack

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D-2095 Obermarschacht, DE

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Patents Grantslast 30 patents

Information Patent Grant
Continual digging, transport and loading accessory for earth or mat...
- Patent number 5,214,866
- Issue date Jun 1, 1993
- Alfred Hackmack
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Slit trencher
- Patent number 4,861,199
- Issue date Aug 29, 1989
- Alfred Hackmack
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Surface working accessory and method
- Patent number 4,852,946
- Issue date Aug 1, 1989
- Alfred Hackmack
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Milling device
- Patent number 4,803,789
- Issue date Feb 14, 1989
- Alfred Hackmack
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Surface working accessory
- Patent number 4,761,038
- Issue date Aug 2, 1988
- Alfred Hackmack
- B28 - WORKING CEMENT, CLAY, OR STONE