Hydraulically Operable Apparatus For Making Slit Trenches

Heusler , et al. April 10, 1

Patent Grant 3726349

U.S. patent number 3,726,349 [Application Number 05/108,772] was granted by the patent office on 1973-04-10 for hydraulically operable apparatus for making slit trenches. This patent grant is currently assigned to Orenstein & Koppel Aktiengesellschaft. Invention is credited to Helmut Heusler, Dieter Maly.


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