Plant husbandry – Injection – method or apparatus
Patent
1978-08-02
1979-12-04
Bagwill, Robert E.
Plant husbandry
Injection, method or apparatus
47 10, A01G 2900
Patent
active
041764951
ABSTRACT:
Apparatus and method for drilling a borehole into the sapwood of a tree and injecting a chemical solution into the borehole, preferably during withdrawal of the drill bit, including facilities for supplying a liquid through a passageway within the bit and facilities for injecting a quantity of liquid, proportional to the volume of the borehole and allocated simultaneously with and in response to progression of the drill bit, into the borehole as the drill bit is being withdrawn therefrom.
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Bagwill Robert E.
Hercules Incorporated
Martin III Joshua W.
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