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US3001649A
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Apparatus for sorting switch ties
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US2938552A
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Apparatus for trimming and sorting switch ties
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US2876815A
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Method of and apparatus for trimming and sorting switch ties
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US2864516A
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Apparatus for handling crossties
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US2830629A
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Woodworking machine provided with means for automatically positioning its planer head, responsive to dimensional variations in work pieces
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US2706344A
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Method of controlled air seasoning of wood
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US2763069A
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Method of controlling air seasoning of wood
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US2540994A
|
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Hold-down apparatus for poles
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US2540993A
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Pole kicking apparatus
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US2603588A
|
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Apparatus for partially dehydrating and cleansing oily wood preservatives
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US2457135A
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Grapple
|
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US2467113A
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Method of handling crossties
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US2382299A
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Loading and unloading crane
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US2403346A
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Grapple for handling crossties and the like
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US2474705A
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Method of and apparatus for partially dehydrating and cleansing oily wood preservatives
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US2363237A
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Production of useful materials
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US2349721A
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Producing valuable oils from coal tar
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US2314257A
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Apparatus for and method of cleaning and partially dehydrating oily wood preservatives
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US2310194A
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Process of producing toxic material
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US2310193A
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Process for treating pitch
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