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Ripping apparatus
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Patent number 4,152,991
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Issue date May 8, 1979
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Caterpillar Tractor Co.
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Robert N. Stedman
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B60 - VEHICLES IN GENERAL
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Track surfacing
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Patent number 4,063,516
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Issue date Dec 20, 1977
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Franz Plasser Bahnbaumaschinen Industriegesellschaft m.b.H.
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Josef Theurer
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3584406
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Patent number 3,584,406
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Issue date Jun 15, 1971
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3579873
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Patent number 3,579,873
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Issue date May 25, 1971
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3427990
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Patent number 3,427,990
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Issue date Feb 18, 1969
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2991988
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Patent number 2,991,988
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Issue date Jul 11, 1961
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2965986
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Patent number 2,965,986
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Issue date Dec 27, 1960
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2846206
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Patent number 2,846,206
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Issue date Aug 5, 1958
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2359089
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Patent number 2,359,089
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Issue date Sep 26, 1944
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2336079
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Patent number 2,336,079
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Issue date Dec 7, 1943
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2284178
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Patent number 2,284,178
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Issue date May 26, 1942
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2266633
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Patent number 2,266,633
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Issue date Dec 16, 1941
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1951166
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Patent number 1,951,166
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Issue date Mar 13, 1934
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1864183
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Patent number 1,864,183
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Issue date Jun 21, 1932
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1808896
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Patent number 1,808,896
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Issue date Jun 9, 1931
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1499219
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Patent number 1,499,219
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Issue date Jun 24, 1924
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1404875
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Patent number 1,404,875
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Issue date Jan 31, 1922
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES