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PL292916A1
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Tree guard for protecting trees against gnawing and/or debarking them by animals of the deer family
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PL291868A1
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Ground surface trap for catching the weevils
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PL288328A2
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Method of increasing the effectiveness of resin drainage stimulators used in tapping of pine-trees
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PL288329A2
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Method of intensifying resin drainage while tapping pine-trees
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PL271672A2
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Method of preparing food for wild ruminants
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PL271673A2
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Method of supplementing wild animals' lack of food
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PL268844A2
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Method for colouring chemically protected wood
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PL268733A2
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Segmented container for holding entrapped bark beetles
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PL253392A2
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Anti-flame protection agents for protecting wooden or wood containg materials and steel or other metal structures against flame
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PL248522A2
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Method of producing fire extinguishing foam in particular for extinguishing forest fires using aircrafts
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PL247527A2
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Feeder for seedlings having shielded root system
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PL247528A2
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Small plough for a seedling planter
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PL246678A2
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Method of determination of humidity and inflammability of vegetable materials and apparatus therefor
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PL237797A2
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Apparatus for clipping roots of large tree seedlings
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GB977801A
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Method of and apparatus for harvesting trees
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GB716347A
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Method of forming composite glued wooden members, and wooden members formed by the method
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