PRESERVATIVE INJECTION MACHINE
United States Patent 3450073

Inventors:
Baker, Roy E.
Publication Date:
06/17/1969
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Assignee:
Roy, Baker E.
Primary Class:
111/118
Other Classes:
111/89, 118/50, 175/21, 175/19
International Classes:
B27K3/10; B27K3/02; B27K3/02
US Patent References:
3113534Root feeding tool and method
3136274Lawn perforator
3397542Method and apparatus for treating soils




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