Patent US1787219 - PEED TROTTER AND ARTHUR SWANSON

Patents

Inventors: PEED TROTTER, PEED TROTTER
Current U.S. Classification: 264/293; 99/421.00V; 425/385

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Citing Patent	Filing date	Issue date	Original Assignee	Title
US4773838	1 Apr 1987	27 Sep 1988	Kt-Suunnittelu Oy	Slipforming extruder for casting concrete slabs
US4778371	9 Jan 1987	18 Oct 1988	KT-SUUNNITTELU Oy	Apparatus for forming frogs in the sides of a concrete element