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US3436056A
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Drive system for yarder used in double main line logging
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US3467260A
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Snorkel-equipped loading boom with safeguard against destructive bending of snorkel
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US3330427A
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Barge loading crane and method
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US3282569A
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Infinite-ratio driving interlock for yarder
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US3292908A
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Head mounting for main and haulback sheaves of a logging spar
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US3346281A
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Lock mechanism for telescoping spar
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US3300188A
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Interlocking yarder
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US3258022A
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Hydraulically powered drive system with pneumatic control circuit
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US3062385A
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Outrigger-equipped loader-yarder vehicle
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US3090497A
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Differential slack line carrier
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US2913027A
|
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Simultaneous-acting multi-platen hot press
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US2884033A
|
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Multi-platen hot press
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US2972423A
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Art of feeding mats to a hot-press
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US2884032A
|
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Multi-platen hot press
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US2720986A
|
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Tower yarder assembly
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US2558686A
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Portable crane
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US2607500A
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Tower yarder assembly
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US2431446A
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Grease-sealed underwater pulley block
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US2428163A
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Crane
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US2422283A
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Self-righting dump car
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